CN110485955B

CN110485955B - Well drilling well head suction helps row union system

Info

Publication number: CN110485955B
Application number: CN201910815739.0A
Authority: CN
Inventors: 范黎明; 邓虎; 韩烈祥; 邓柯; 杨超; 李刚; 刘殿琛; 蒋杰; 廖兵; 吴俊�; 刘贵义; 赵军
Original assignee: China National Petroleum Corp; CNPC Chuanqing Drilling Engineering Co Ltd
Current assignee: China National Petroleum Corp; CNPC Chuanqing Drilling Engineering Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2021-05-04
Anticipated expiration: 2039-08-30
Also published as: CN110485955A

Abstract

The invention provides a well drilling wellhead pumping and discharging assisting pipe converging system which comprises a plurality of hard pipeline pipes, a well drilling sand discharging pipeline axial inclined-spraying pumping and discharging assisting mechanism capable of realizing negative pressure pumping action on a well drilling wellhead and/or a pipeline turning position, and a telescopic pipeline length adjusting mechanism capable of realizing telescopic connection for a well drilling sand discharging pipeline. The invention can solve the safety problem of gas drilling open-hole operation under the condition of a small amount of natural gas in the stratum, obviously improve the safety of gas drilling open-hole operation in a gas-containing layer section, and can also be applied to conventional normal cycle or reverse cycle gas drilling, thereby effectively reducing the local loss at a right-angle turning part and ensuring that the sand discharge process on the ground surface is smoother; can also easily, conveniently, adjust sand discharge pipeline length at will, dock the sand discharge pipeline fast, avoid lifting the sled repeatedly, reduce staff's work load and working strength, shorten the installation operation cycle, save operation personnel cost and crane use expense.

Description

Well drilling well head suction helps row union system

Technical Field

The invention relates to the technical field of oil and gas drilling (drilling) engineering, in particular to a sand discharge manifold equipment system for drilling, which can be used for performing nitrogen suction safety operation under the condition of a small amount of natural gas from a stratum, and can also be used for reducing the sand discharge resistance of a surface sand discharge manifold during forward circulation or reverse circulation drilling and improving the sand discharge effect.

Background

Generally, the gas drilling technology has the advantages of accelerating, controlling leakage, protecting a reservoir and the like, is widely applied to oil and gas blocks such as Chongqing, Xinjiang, Qinghai and the like in recent years, and can accelerate the speed by more than 3 times compared with the conventional drilling technology. Gas drilling speed increasing is more common in gas-containing intervals with poor drilling difficulty; however, once a small amount of natural gas (10000 m or less) is drilled out of the formation³And d), the circulating medium is converted into inert gas nitrogen to avoid underground explosion accidents, but because of the lack of an annular blowout preventer, the large size of a drilling tool and the incapability of passing through a rotary control head assembly and other reasons, natural gas possibly overflows a well head during open-hole operations such as tripping and rubber core replacement, and great potential safety hazards are brought.

At the present stage, effective measures for solving the problem that natural gas overflows a wellhead when open-hole operations such as tripping and replacing a rubber core are carried out under the condition that a small amount of natural gas is produced from the stratum are not provided, and natural gas which possibly overflows is blown away mainly by opening an upper and a lower explosion-proof exhaust fans of a drill floor to prevent the natural gas from being gathered. This treatment method has a number of disadvantages:

firstly, the natural gas is a passive control measure, the natural gas cannot be prevented from overflowing from a well head fundamentally, and the natural gas which possibly overflows can be blown away only by an exhaust fan;

although the anti-explosion exhaust fan can blow away the overflowing natural gas to avoid gathering, operators on a drill floor and a wellhead still need to directly face the natural gas which possibly overflows, so that great potential safety hazards exist, and knocking operation is particularly carried out;

thirdly, because the safety of field operation cannot be ensured, when a small amount of natural gas (less than or equal to 10000 m) is produced in the stratum during drilling³And/d), the gas drilling operation is often forced to be terminated early, which is not favorable for the speed-up advantage.

In addition, generally speaking, the sand discharge pipeline in the well site of the gas drilling adopts flange connection, and is preferably connected out of the well site in a straight way. Due to the fact that the diameter and the weight of the sand discharge pipelines are large, in most of the time, the butt joint of the sand discharge pipelines on site is difficult, and the sand discharge pipelines are difficult to butt in place at one time. Normally, there will be a gap between both sand discharge lines. In order to ensure that the connection is tight and jointed, the flanges (or the hoops) at the end parts of the pipelines are contacted together and then fastened by adopting modes of manual lifting, lever prying and the like. The sand discharge pipeline is very heavy, so that the pipeline is very inconvenient to install. The method not only greatly increases the installation operation time, increases the workload and the working strength of workers, but also improves the cost of the operators and the use cost of the crane, even can cause the drill to stop and the like, and prolongs the serious consequences of the drilling period.

Disclosure of Invention

The present invention aims to address at least one of the above-mentioned deficiencies of the prior art.

For example, one of the objects of the present invention is to solve the safety problems in gas drilling open-hole operations under conditions where a small amount of natural gas is formed and the difficulty in docking a sand discharge line in a well site for gas drilling. The invention also aims to solve the problems that when the conventional forward circulation or reverse circulation gas drilling is carried out (particularly reverse circulation drilling), the sand discharge effect is influenced due to large local loss caused by a plurality of right-angle turning positions of the sand discharge channel on the surface, and the butt joint of the sand discharge pipeline in a well site of the gas drilling is difficult.

In order to achieve at least one of the above objects, the present invention provides a drilling wellhead pumping and exhausting-assisting manifold system, which includes a plurality of hard pipeline pipes including a first hard pipeline pipe and a second hard pipeline pipe arranged along a fluid flowing direction, and further includes a drilling sand discharge pipeline axial inclined-jet pumping and exhausting-assisting mechanism and a telescopic pipeline length adjusting mechanism for a drilling sand discharge pipeline, wherein the drilling sand discharge pipeline axial inclined-jet pumping and exhausting-assisting mechanism includes: the injection device comprises a lower core pipe, a middle core female pipe, a middle core male pipe, an upper core pipe, a basic flange, an air injection shell and an injection flange which are coaxially arranged along a first axial direction, wherein the basic flange is provided with a left side part and a right side part which is fixedly connected with the air injection shell through an anti-rotation component; the lower core tube has a left side portion inserted into the base flange and brought into close contact with the inner circumferential wall of the base flange through the first sealing member, and a right side portion inserted into the left side of the injection flange and brought into close contact with the inner circumferential wall of the injection flange through the second sealing member; the injection flange is positioned in the gas injection shell, and one or more than two injection holes are arranged on the circumferential wall of the injection flange in a penetrating way; the central core main pipe is provided with a threaded inner wall and a left side part which is inserted into the gas injection shell and is connected with the gas injection shell in a non-rotatable mode, and the left side part of the central core main pipe is in close contact with the gas injection shell through a third sealing piece; the central male pipe is provided with a left side part which is inserted into the right side of the injection flange and is tightly contacted with the inner circumferential wall of the injection flange through a fourth sealing member, a right side part which is inserted into the left side of the upper core pipe and is tightly contacted with the inner circumferential wall of the upper core pipe through a fifth sealing member, threads which are arranged on the outer wall of the central male pipe and can be matched with the inner wall of the threads of the central female pipe, and a rotary matching part which can enable the central male pipe to rotate under the action of external force, wherein the rotary matching part can enable the central male pipe to move leftwards or rightwards through rotation so as to correspondingly close or open the injection hole through the left end of the left side part of the central male pipe; the upper core pipe is provided with a right side part which can be connected with the inlet end of the first or second hard pipeline body, and the left side of the upper core pipe is spaced from the right end of the central core main pipe; the gas injection shell is provided with one or more than two gas injection joints which can be used for injecting external gas and are communicated with the injection hole;

the telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline comprises a lower base flange, a lower base pipe, an upper base pipe, a primary extension pipe, a limiting ring and a secondary extension pipe which are coaxially arranged along a second axial direction, wherein the lower base flange is provided with a left side part and a right side part which is provided with an outer protrusion part protruding outwards in the radial direction; the lower base pipe is provided with a left side part fixedly connected with the outer protruding part of the right side part of the lower base flange through an anti-rotation component, and a right side part provided with a first thread on the inner circumferential surface; the upper base pipe comprises a left side part with a first inner diameter and a right side part with a second inner diameter, wherein the first inner diameter is larger than the second inner diameter, and second threads matched with the first threads of the right side part of the lower base pipe are arranged on the outer circumferential wall of the left side part of the upper base pipe; the first-stage extension pipe comprises a left side part with a first outer diameter, a right side part with a second outer diameter and a limiting protrusion part arranged on the inner circumferential surface of the right side part of the first-stage extension pipe, wherein the first outer diameter is larger than the first inner diameter, the second outer diameter is smaller than the first inner diameter, the left side part of the first-stage extension pipe is positioned between the left end surface of the left side part of the upper base pipe and the right end surface of the outer protrusion part of the lower base flange, the right side part of the first-stage extension pipe is positioned between the left end surface of the right side part of the upper base pipe and the right end surface of the outer protrusion part of the lower base flange, and the first-stage extension pipe can move leftwards or rightwards in a space formed by the outer protrusion part of the lower base flange, the lower base pipe and the upper base pipe; the limiting ring is fixedly connected to the inner circumferential wall of the left side part of the primary extension pipe; the second-stage extension pipe comprises a left side part with a third outer diameter, a middle convex part with a fourth outer diameter and a right side part with a fifth outer diameter, wherein the left side part, the middle convex part and the right side part are sequentially connected, the third outer diameter is smaller than the fourth outer diameter, the fifth outer diameter is smaller than the fourth outer diameter and is equal to the second inner diameter, the left side part of the second-stage extension pipe penetrates through the limiting ring and then is inserted into the right side part of the lower base flange, and the middle convex part is located between the limiting protruding part and the limiting ring of the first-stage extension pipe, so that the second-stage extension pipe can move leftwards or rightwards between the limiting protruding part and the limiting ring of the first-stage extension pipe. The axial inclined jet pumping drainage-assisting mechanism of the drilling sand discharge pipeline can select one or two connection modes of the following modes: the left side part of a basic flange of the axial inclined jet suction drainage assisting mechanism of the drilling sand discharging pipeline is connected with a well head, and the right side part of an upper core pipe of the axial inclined jet suction drainage assisting mechanism of the drilling sand discharging pipeline is connected with the inlet end of a first hard pipeline body; and secondly, the left side part of a basic flange of the axial inclined jet suction drainage assisting mechanism of the drilling sand discharging pipeline is connected with the outlet end of a first hard pipeline body, and the right side part of an upper core pipe of the axial inclined jet suction drainage assisting mechanism of the drilling sand discharging pipeline is connected with the inlet end of a second hard pipeline body. The telescopic pipeline length adjusting mechanism can select any one or more than two connection modes of the following modes: first, the left side portion of the lower base flange of the telescopic line length adjustment mechanism is connected to the outlet end of the preceding one of two adjacent hard line pipe bodies of the plurality of hard line pipe bodies, and the right side portion of the secondary extension pipe of the telescopic line length adjustment mechanism is connected to the inlet end of the following one of the two adjacent hard line pipe bodies; the left side part of a lower base flange of the telescopic pipeline length adjusting mechanism is connected with the right side part of an upper core pipe of the drilling sand discharge pipeline axial inclined-spraying suction drainage-assisting mechanism, and the right side part of a secondary extension pipe of the telescopic pipeline length adjusting mechanism is connected with the inlet end of a hard pipeline body correspondingly positioned behind the drilling sand discharge pipeline axial inclined-spraying suction drainage-assisting mechanism; and thirdly, the right side part of the second-stage extension pipe of the telescopic pipeline length adjusting mechanism is connected with the left side part of the basic flange of the axial inclined-spraying suction auxiliary discharging mechanism of the drilling sand discharge pipeline, and the left side part of the lower basic flange of the telescopic pipeline length adjusting mechanism is connected with the corresponding outlet end of the hard pipeline body positioned in front of the axial inclined-spraying suction auxiliary discharging mechanism of the drilling sand discharge pipeline. The second axial direction may be independent of the first axial direction. For example, the second axis may be parallel to or coincident with or intersecting or out of plane with the first axis.

In an exemplary embodiment of the invention, the number of the axial inclined jet pumping and drainage-assisting mechanisms of the drilling and sand discharging pipeline can be one or more than two. In addition, the axial inclined jet and suction drainage-assisting mechanism of the drilling sand discharge pipeline can be arranged at the position of an wellhead and/or the position of the downstream of a pipeline turning.

In an exemplary embodiment of the present invention, the suction drainage aid mechanism may further include an upper core pipe flange capable of connecting the right side portion of the upper core pipe with the inlet end of the first hard line pipe body or with the inlet end of the second hard line pipe body.

In an exemplary embodiment of the present invention, the suction evacuation assist mechanism may further include an upper core tube chucking member capable of chucking a right side portion of the central core male tube with the upper core tube and restricting an axial displacement between the upper core tube and the central core male tube.

In an exemplary embodiment of the present invention, a portion of the left side portion of the core barrel may be provided to have a polygonal cross-section, and a portion of the gas injection housing, which is fitted with the portion of the left side portion of the core barrel, has a corresponding polygonal recess to limit mutual rotation between the core barrel and the gas injection housing.

In an exemplary embodiment of the invention, one or more of the first, second, third, fourth and fifth seals may include cooperating seal rings and seal grooves.

In an exemplary embodiment of the present invention, the suction and discharge assisting mechanism may further include a gas compression device, and a gas outlet of the gas compression device is connected to the gas injection joint of the gas injection housing.

In an exemplary embodiment of the present invention, the right side portion of the base flange may be fixedly coupled to the gas injection housing by a detachable anti-rotation member.

In an exemplary embodiment of the invention, the number of the telescopic line length adjustment mechanisms for the drilling and sand discharging line may be one or more. In addition, the telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline can be arranged between the axial inclined jet and suction drainage assisting mechanism of the adjacent drilling sand discharge pipeline and the hard pipeline body, and/or can be arranged between the two adjacent hard pipeline bodies.

In an exemplary embodiment of the present invention, the telescopic pipeline length adjustment mechanism may further include a secondary extension pipe flange capable of connecting the right side portion of the secondary extension pipe with the inlet end of the second hard pipeline pipe body or with the inlet end of the latter hard pipeline pipe body.

The telescopic pipeline length adjusting mechanism may further include a first sealing member disposed between the outer circumferential wall of the left side portion of the primary extension pipe and the inner circumferential wall of the lower base pipe, a second sealing member disposed between the outer circumferential wall of the left side portion of the secondary extension pipe and the inner circumferential wall of the lower base flange, and a third sealing member disposed between the outer circumferential wall of the middle protrusion portion of the secondary extension pipe and the inner circumferential wall of the right side portion of the primary extension pipe.

In an exemplary embodiment of the present invention, the telescopic line length adjustment mechanism may further include a liquid pouring port capable of connecting a space surrounded by the first, second, and third seal members with the first hydraulic press.

In an exemplary embodiment of the invention, one or more of the first, second and third seal members may include cooperating seal rings and seal grooves. Further, the telescopic line length adjusting mechanism may further include a fourth sealing member provided between the left side portion of the upper base pipe and the right side portion of the lower base pipe, and a fifth sealing member provided between the right side portion of the upper base pipe and the right side portion of the secondary extension pipe. In addition, the telescopic pipeline length adjusting mechanism can further comprise a liquid return port, and the liquid return port can be used for connecting the space enclosed by the first sealing component, the third sealing component, the fourth sealing component and the fifth sealing component with the second hydraulic device. The fourth and/or fifth seal members may include cooperating seal rings and seal grooves.

In an exemplary embodiment of the invention, the stopper ring is fixedly attached to the inner circumferential wall of the left side portion of the primary extension pipe by means of a screw.

Drawings

FIG. 1 illustrates a schematic diagram of an exemplary embodiment of a wellhead suction-assist manifold system of the present invention;

FIG. 2a is a schematic cross-sectional view of an axial blowout suction and discharge assistance mechanism of a wellbore wellhead suction and discharge assistance manifold system according to an exemplary embodiment of the present invention;

FIG. 2b shows an enlarged partial schematic view of M in FIG. 2 a;

FIG. 3 illustrates a schematic external view of the axial blowout suction and evacuation assistance mechanism of the drilling sand discharge line in an exemplary embodiment of the drilling wellhead suction and evacuation manifold system of the present invention;

FIG. 4 is a schematic cross-sectional view of an exemplary embodiment of a wellbore wellhead pumping and discharge aiding manifold system of the present invention with the axial blowout and pumping and discharge aiding mechanism in an open position;

FIG. 5 is a schematic view of a drilling sand discharge line axial blowout suction drainage aid mechanism in an exemplary embodiment of a drilling wellhead suction drainage manifold system of the present invention replacing the jet flange;

FIG. 6 is a diagram illustrating the appearance of an axial blowout suction and discharge assist mechanism of a drilling sand discharge line in an exemplary embodiment of a drilling wellhead suction and discharge assist manifold system of the present invention;

FIG. 7a shows a schematic diagram of a telescoping line length adjustment mechanism for a drilling sand discharge line in an exemplary embodiment of a drilling wellhead pumping assisted discharge piping system of the present invention;

FIG. 7b shows a cross-sectional view corresponding to section H-H in FIG. 7 a;

FIG. 8 illustrates a schematic external view of a telescoping line length adjustment mechanism for a drilling sand discharge line in an exemplary embodiment of a drilling wellhead pumping and discharge-assist manifold system of the present invention;

FIG. 9 is a schematic diagram illustrating a one-stage extension of a telescoping line length adjustment mechanism for a drill sand discharge line in an exemplary embodiment of a drill wellhead pumping assisted discharge piping system of the present invention;

FIG. 10 is a schematic diagram illustrating a secondary extension of a telescoping line length adjustment mechanism for a drill sand discharge line in an exemplary embodiment of a drill wellhead pumping assisted discharge piping system of the present invention;

fig. 11 is a diagram illustrating the appearance of a telescopic line length adjustment mechanism for a drilling sand discharge line in an exemplary embodiment of a drilling wellhead pumping and discharge-aiding manifold system of the present invention.

Description of reference numerals:

a-axial inclined jet suction drainage assisting mechanism for a drilling sand discharge pipeline, B-telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline and C-hard pipeline body;

a1-lower core tube, A2-basic flange, A3-gas injection shell, A4-injection flange, A5-middle core female tube, A6-upper core tube snap ring, A7-upper core tube flange, A8-upper core tube, A9-middle core male tube, A10-gas injection joint, A11-inner hexagon screw, A12-upper core tube snap ring fastening bolt;

b1-lower base pipe flange, B2-first-stage extension pipe, B3-lower base pipe, B4-first-stage extension pipe limiting ring, B5-upper base pipe, B6-second-stage extension pipe, B7-second-stage extension pipe flange, B8-oil return port, B9-inner hexagon screw and B10-oil injection port.

Detailed Description

Hereinafter, the drilling wellhead suction and discharge assist manifold system of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments. It should be noted that "first", "second", "third", "fourth", "fifth", etc. are merely for convenience of description and for convenience of distinction, and are not to be construed as indicating or implying relative importance. "upper," "lower," "inner," and "outer" are merely used for convenience of description and to constitute relative orientations or positional relationships, and do not indicate or imply that the referenced components must have that particular orientation or position.

In an exemplary embodiment of the invention, the wellhead pumping and draining-assisting manifold system comprises a plurality of hard pipeline pipes, the plurality of hard pipeline pipes comprise a first hard pipeline pipe and a second hard pipeline pipe which are arranged along the flowing direction of fluid, and the wellhead pumping and draining-assisting manifold system further comprises a drilling and sand discharging pipeline axial inclined-jet pumping and draining-assisting mechanism and a telescopic pipeline length adjusting mechanism for the drilling and sand discharging pipeline. Here, the hard pipe body may be a pipe body such as a tee, a quarter bend, a straight pipe, or the like. In addition, the hard pipeline body can also be one or more of a radial azimuth stepless angle adjusting mechanism (authorized bulletin number: CN106437579B) for a gas drilling manifold, a universal adjusting short joint (authorized bulletin number: CN206220883U) for the gas drilling manifold and a steering mechanism (CN207377518U) for a planetary gas drilling manifold.

In addition, the number of the axial inclined jet pumping drainage-assisting mechanisms of the drilling sand discharge pipeline can be one or more than two. The axial inclined jet pumping and exhausting assisting mechanism of the drilling sand discharge pipeline can be arranged at a wellhead position and/or at a pipeline turning downstream position (for example, a pipeline right-angle turning downstream position) so as to realize a negative pressure pumping effect on the wellhead and/or the pipeline turning position, so that wellhead fluids (such as combustible gases including natural gas and the like or gas-solid mixed phases, multiphase fluids including gas-liquid-solid mixed phases and the like) can be sucked into a sand discharge manifold through the pumping effect, and local loss caused by turning to the fluids can be greatly reduced.

In addition, the number of the telescopic pipeline length adjusting mechanisms for the drilling sand discharge pipeline can be one or more. The telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline can be arranged between the axial inclined-jet pumping auxiliary discharge mechanism of the adjacent drilling sand discharge pipeline and the hard pipeline pipe body, so that telescopic connection between the axial inclined-jet pumping auxiliary discharge mechanism of the adjacent drilling sand discharge pipeline and the hard pipeline pipe body is realized. In addition, the telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline can also be arranged between two adjacent hard pipeline pipes so as to realize telescopic connection between the two adjacent hard pipeline pipes.

In the exemplary embodiment, the axial inclined jet suction drainage-assisting mechanism of the drilling sand discharge pipeline may include: the lower core pipe, the middle core female pipe, the middle core male pipe, the upper core pipe, the basic flange, the gas injection shell and the injection flange are coaxially arranged.

The left side of the base flange can be used for connecting other components; the right side of the gas injection device is fixedly connected with the gas injection shell through an anti-rotation component. The rotation preventing member is capable of restricting relative rotation between the gas injection housing and the base flange. For example, the rotation prevention member may be an inner polygonal screw, but the present invention is not limited thereto. In addition, the anti-rotation component can also be provided with a structure convenient for manual disassembly, so that the disassembly operation is convenient when the injection flanges with different specifications need to be replaced.

The left side of the lower core pipe is inserted into the basic flange and is tightly contacted with the inner circumferential wall of the basic flange through a first sealing element so as to lead the lower core pipe to be in sealing sleeve joint with the basic flange; the right side of the lower core tube is inserted into the left side of the injection flange and is tightly contacted with the inner circumferential wall of the injection flange through a second sealing piece so as to lead the lower core tube to be sleeved with the injection flange in a sealing way. The first sealing element and the second sealing element may be formed by a sealing ring and a sealing groove which are matched with each other, however, the present invention is not limited thereto, and other members capable of achieving an effective sealing function may be used.

The injection flange is positioned in the gas injection shell, and one or more than two injection holes are arranged on the circumferential wall of the injection flange in a penetrating way. The central axis of the injection hole can form an acute angle, a right angle or an obtuse angle with the central axis of the injection flange.

The central core female pipe is provided with a threaded inner wall. The left side of the central core main pipe is inserted into the gas injection shell and is connected with the gas injection shell in a non-rotatable mode; and the outer circumferential wall of the left side of the central core main pipe is tightly contacted with the inner circumferential wall of the gas injection shell through a third sealing piece so as to lead the central core main pipe to be sleeved with the gas injection shell in a sealing way. The third sealing element may be formed by a sealing ring and a sealing groove which are matched with each other, however, the present invention is not limited thereto, and other members capable of achieving an effective sealing function may be used. In addition, a portion of the left side of the core main tube may be configured to have a polygonal cross-section, and a portion of the gas injection housing that fits the portion of the left side of the core main tube has a corresponding polygonal recess to prevent mutual rotation between the core main tube and the gas injection housing.

The left side of the central core male pipe is inserted into the right side of the injection flange and is in close contact with the inner circumferential wall of the injection flange through a fourth sealing piece, so that the central core male pipe is in sealing sleeve connection with the injection flange. The right side of the central core male pipe is inserted into the left side of the upper core pipe and is in close contact with the inner circumferential wall of the upper core pipe through a fifth sealing member so as to enable the central core male pipe to be in sealing sleeve joint with the upper core pipe. The fourth seal or the fifth seal may be formed by a seal ring and a seal groove which are matched with each other, however, the present invention is not limited thereto, and other members capable of achieving an effective sealing function may be used. The central core male pipe also has a thread which is arranged on the outer wall of the central core male pipe and can be matched with the thread inner wall of the central core female pipe, and a rotary matching part which can enable the central core male pipe to rotate around the central axis under the action of external rotation force (such as manual or mechanical rotation force). For example, the swivel fitting may be one or more swivel holes provided on the outer wall of the core male tube at a position between the upper core tube and the core female tube. Here, the swivel fitting portion enables the center core male pipe to be rotated by an external force to achieve leftward movement along the screw thread, thereby achieving closing or shielding of the injection hole of the injection flange by the left end portion of the center core male pipe to prevent an air flow entering the injection hole of the injection flange through the gas injection housing from entering the pipeline. The swivel fitting part also enables the center core male pipe to move rightwards along the threads through external force rotation, so that the injection hole of the injection flange is opened or separated through the end part on the left side of the center core male pipe, and air flow entering the injection hole of the injection flange through the air injection shell enters the pipeline.

The right side of the upper core tube can be connected with other components, and a space is arranged between the left side of the upper core tube and the right end of the central core main tube. The swivel fitting of the central core male tube can be located within this space.

The gas injection housing has one or more gas injection joints. The gas injection joint can supply external gas to inject into the gas injection casing. The gas injection connector may be directly communicated with the injection hole of the injection flange or may be communicated with the injection hole of the injection flange through the inner space of the gas injection housing so as to inject external gas into the pipeline through the injection hole of the injection flange.

In the exemplary embodiment, the telescopic pipe length adjustment mechanism for a drilling and sand discharging pipeline may include a lower base flange, a lower base pipe, an upper base pipe, a primary extension pipe, a limiting ring, and a secondary extension pipe, which are coaxially disposed.

The left side of the lower base flange can be connected with other components; the right side of the lower base flange may be provided with an outer protrusion protruding radially outward. The outer projection of the lower base flange may have a flange-like shape.

The left side of the lower base pipe can be fixedly connected with the outer protruding part of the lower base flange through an anti-rotating component. The anti-rotation member can restrict relative rotation between the lower base pipe and the lower base flange. For example, the rotation prevention member may be an inner polygonal screw, but the present invention is not limited thereto. The inner circumferential surface of the right side of the lower base pipe may be provided with a first screw thread having a predetermined width in an axial direction.

The upper base pipe may include a left side portion having a first inner diameter and a right side portion having a second inner diameter. Wherein the first inner diameter is greater than the second inner diameter. The outer circumferential wall of the left side portion of the upper base pipe may be provided with a second thread capable of being engaged with the first thread of the lower base pipe. Through the cooperation of second screw thread and first screw thread, can be in the same place upper foundation pipe and lower foundation pipe. The lower base pipe is similar to the female pipe and the upper base pipe is similar to the male pipe.

The primary extension pipe may include a left side portion having a first outer diameter, a right side portion having a second outer diameter, and a stopper protrusion disposed on an inner circumferential surface of the right side portion of the primary extension pipe. Wherein the first outer diameter is larger than the first inner diameter, and the second outer diameter is smaller than the first inner diameter. The left side part of the first-stage extension pipe is positioned between the left end surface of the left side part of the upper base pipe and the right end surface of the outer protruding part of the lower base flange; the right side portion of the first-stage extension pipe is located between the left end face of the right side portion of the upper base pipe and the right end face of the outer protruding portion of the lower base flange, and the first-stage extension pipe can move leftward or rightward in the axial direction in a space formed by the outer protruding portion of the lower base flange, the lower base pipe and the upper base pipe.

The limiting ring can be fixedly connected to the inner circumferential wall of the left side part of the primary extension pipe.

The secondary extension tube may include a left side portion having a third outer diameter, a middle convex portion having a fourth outer diameter, and a right side portion having a fifth outer diameter. The left side part, the middle convex part and the right side part of the secondary extension pipe are sequentially connected along the axial direction. The right side part of the secondary extension pipe can be connected with other components. For example, the right side portion of the secondary extension pipe may be connected with other components by a secondary extension pipe flange to make the connection manner more convenient and easy to handle, but the present invention is not limited thereto. And the third outer diameter is smaller than the fourth outer diameter, and the fifth outer diameter is smaller than the fourth outer diameter and equal to the second inner diameter. The left side portion of the secondary extension pipe can penetrate through the limiting ring and then be inserted into the right side portion of the lower base flange. For example, the stop collar is fitted over the left side portion of the secondary extension pipe and is located between the right side portion of the lower base flange and the convex portion of the secondary extension pipe. The convex part of the second-stage extension pipe is positioned between the limiting protruding part of the first-stage extension pipe and the limiting ring, so that the second-stage extension pipe can move leftwards or rightwards between the limiting protruding part of the first-stage extension pipe and the limiting ring.

To the condition that well drilling sand discharging pipeline axial jet-suction aided discharging mechanism sets up at the well head, well drilling sand discharging pipeline axial jet-suction aided discharging mechanism's basic flange the left side portion is connected with the well head, well drilling sand discharging pipeline axial jet-suction aided discharging mechanism's last core pipe the right side portion is connected with the entry end of first hard pipeline body to can help discharging mechanism with well head and first hard pipeline body intercommunication through well drilling sand discharging pipeline axial jet-suction aided discharging mechanism.

In the case where the drilling sand discharge line axial-direction slant-jet suction drainage assisting mechanism is provided between two hard line pipe bodies (for example, between first and second hard line pipe bodies that constitute a pipe line quarter turn with each other), the left side portion of the base flange of the drilling sand discharge line axial-direction slant-jet suction drainage assisting mechanism is connected to the outlet end of the first hard line pipe body, and the right side portion of the upper core pipe of the drilling sand discharge line axial-direction slant-jet suction drainage assisting mechanism is connected to the inlet end of the second hard line pipe body, so that two hard line pipe bodies adjacent to each other can be communicated by the drilling sand discharge line axial-direction slant-jet suction drainage assisting mechanism.

The left side portion of the lower base flange of the telescopic line length adjustment mechanism may be connected to an outlet end of a preceding one of two hard line pipe bodies adjacent to each other among the plurality of hard line pipe bodies, and the right side portion of the secondary extension pipe of the telescopic line length adjustment mechanism may be connected to an inlet end of a subsequent one of the two hard line pipe bodies adjacent to each other, so that the two hard line pipe bodies adjacent to each other in the front and rear can be telescopically connected.

In addition, the left side part of the lower base flange of the telescopic pipeline length adjusting mechanism is connected with the right side part of the upper core pipe of the drilling sand discharge pipeline axial inclined spraying and sucking auxiliary discharge mechanism, and the right side part of the second-stage extension pipe of the telescopic pipeline length adjusting mechanism is connected with the inlet end of the hard pipeline pipe body correspondingly positioned behind the drilling sand discharge pipeline axial inclined spraying and sucking auxiliary discharge mechanism, so that the drilling sand discharge pipeline axial inclined spraying and sucking auxiliary discharge mechanism and the hard pipeline pipe body which are sequentially arranged in the flowing direction of the fluid can be telescopically connected.

In addition, the right side part of the second-stage extension pipe of the telescopic pipeline length adjusting mechanism is connected with the left side part of the basic flange of the axial inclined-jet pumping auxiliary discharging mechanism of the drilling sand discharge pipeline, and the left side part of the lower basic flange of the telescopic pipeline length adjusting mechanism is connected with the outlet end of the hard pipeline pipe body correspondingly positioned in front of the axial inclined-jet pumping auxiliary discharging mechanism of the drilling sand discharge pipeline, so that the hard pipeline pipe body and the axial inclined-jet pumping auxiliary discharging mechanism of the drilling sand discharge pipeline which are sequentially arranged in the flowing direction of the fluid can be telescopically connected.

In another exemplary embodiment of the present invention, the suction evacuation assisting mechanism may further include an upper core flange on the basis of the structure of the above exemplary embodiment. The upper core pipe flange is convenient for connecting the right side of the upper core pipe with a downstream hard pipeline of the sand discharge pipeline. In addition, the suction and discharge assist mechanism may further include a gas compression device. The gas outlet of the gas compression device can be connected with the gas injection joint of the gas injection shell.

In another exemplary embodiment of the present invention, the suction evacuation mechanism may further comprise an upper core snap-fit on the structure of the above exemplary embodiment. Go up the core pipe joint spare and can be with the right side of well core public pipe and go up the core pipe chucking to limit the axial displacement between core pipe and the well core public pipe, thereby can ensure the sealed effect of core pipe and well core public pipe more effectively, avoid removing because of well core public pipe and remove and lead to well core public pipe and the sealed insecure of core pipe. However, the present invention is not limited to this, and for example, the structure of the fifth sealing member, or the overlapping manner and the overlapping dimension between the right side of the central core male pipe and the left side of the upper core male pipe may be reasonably arranged to ensure the sealing effect between the upper core pipe and the central core male pipe, thereby preventing the central core male pipe and the upper core pipe from being sealed insecurely due to the left-right movement of the central core male pipe.

FIG. 2a is a schematic cross-sectional view of an axial blowout suction and discharge assistance mechanism of a wellbore wellhead suction and discharge assistance manifold system according to an exemplary embodiment of the present invention; fig. 2b shows a partially enlarged schematic view of M in fig. 2 a. Fig. 3 shows an external schematic view of the axial inclined jet pumping and discharging mechanism of the drilling sand discharge pipeline in an exemplary embodiment of the drilling wellhead pumping and discharging manifold system of the invention.

As shown in fig. 2a, 2b and 3, in an exemplary embodiment of the invention, the drilling sand discharge line axial slant jet suction drainage aid mechanism a may comprise the following components: lower core tube a1, base flange a2, gas injection housing A3, injection flange a4, central female tube a5, upper core tube snap ring A6, upper core tube flange a7, upper core tube A8, central male tube a9, gas injection fitting a10, socket head cap screw a11, and upper core tube snap ring set screw a12 (shown in fig. 3).

The upper core tube flange A7 and the upper core tube A8 are connected through threads or welding, and the upper core tube flange A7 and the upper core tube A8 can be integrally machined. The upper core flange a7 is used to connect to downstream hard piping, either flange or clamp connections.

The left side of the basic flange A2 is connected with an upstream hard pipeline, and the connection can be flange connection or clamping connection. The right side of the base flange a2 is fastened to the gas injection housing A3 by a set of socket head cap screws a 11.

The gas injection housing A3 is provided with a set of holes (without limitation) in the radial direction and is connected with the gas injection connector a10 by means of a threaded connection.

The left side of the lower core tube A1 is inserted into the base flange A2, and the two are sealed by a sealing ring. The right side of the lower core tube a1 is inserted into the injection flange a 4. The injection flange A4 is located in the gas injection shell A3, a group of injection holes are formed in the injection flange A4, and the injection flange A is a replaceable component at any time.

The left side of the central core male pipe A9 is inserted into the right end of the injection flange A4, and the right side thereof is inserted into the upper core pipe A8. And sealing grooves are formed among the central core male pipe A9, the injection flange A4 and the upper core pipe A8, and sealing is realized through sealing rings. The outer cylindrical surface (major diameter) of the central core male tube A9 is provided with a thread and a rotary hole. The central core male pipe A9 is connected with the central core female pipe A5 through threads, and the rotary hole can be used for rotating the central core male pipe A9 after being matched with a corresponding tool.

The right end of the central core female pipe A5 is connected with the central core male pipe A9 through threads, the left side of the central core female pipe A5 is hung in the gas injection shell A3, and sealing is achieved through the matching of a sealing groove on the gas injection shell A3 and a sealing ring. Meanwhile, the part of the left end of the central core mother pipe A5, which is positioned inside the gas injection shell A3, has a hexagonal (or square or other polygonal) structure, and is connected with the gas injection shell A3 through the hexagonal (or square or other polygonal) structure, so that radial fixation (namely, non-rotation) is realized.

The injection flange A4 is axially fixed under the combined action of the lower core tube A1, the base flange A2, the gas injection shell A3 and the central core main tube A5.

A6 upper core tube clamp ring has a group (2), and the core tube clamp ring fastening bolts are mutually tightened through A12. The center core male a9 and the upper core A8 are restrained from axial displacement relative to each other by an a6 upper core snap ring.

When the left end and the right end of the axial inclined spraying and sucking exhaust assisting mechanism A are fixed (namely, the left side of the base flange A2 is connected with an upstream hard pipeline, and the left side of the upper core pipe flange A7 is connected with a downstream hard pipeline), only the central core male pipe A9 is a movable part in all the parts. The core male tube a9 can be rotated by operating on a rotary bore (shown in fig. 2 a). Under the action of the screw thread, the central core male pipe A9 can move left and right (the moving distance can be designed according to the requirement). When the central male pipe A9 moves to the left end, the injection hole of the injection flange A4 is closed (no suction effect is generated); when the center male pipe a9 moves rightward, the injection holes of the injection flange a4 are gradually opened. The right end of the central core male tube A9 always moves inside the upper core tube A8. The enlarged partial view M of fig. 2b clearly shows the state where the core male pipe a9 closes the injection hole of the injection flange a 4. Fig. 4 shows a state where the left side of the core pin a9 is moved rightward and opens the injection hole of the injection flange a 4.

The number of the gas injection joints A10 on the gas injection housing A3 can be selected according to the amount of gas required. When the gas amount is large, the number of the gas injection joints A10 is properly increased; when the air quantity is small, the redundant air injection joint A10 can be blocked. High-pressure gas is injected into the interior of the gas injection housing A3 through the gas injection fitting a10, and is injected into the main passage at high speed through the injection holes on the injection flange a 4. Here, the inclination angle, the number, the diameter, etc. of the injection holes may be designed as desired. The injection and entrainment of the high velocity gas stream creates a negative pressure near the base flange a2, thereby drawing the upstream fluid while reducing the flow resistance of the upstream fluid. When the axial inclined jet pumping drainage-assisting mechanism A is arranged near a wellhead, the axial inclined jet pumping drainage-assisting mechanism A can be used for pumping fluid (combustible gas, drilling circulating fluid and the like) near the wellhead so as to avoid overflowing of the fluid from the wellhead; when the axial inclined spraying and sucking discharge-assisting mechanism A is arranged at the downstream of the elbow bend, the axial inclined spraying and sucking discharge-assisting mechanism A can be used for reducing the local loss when fluid flows through the elbow bend, so that the fluid flows more smoothly.

The injection flange a4 can be made in multiple sets as required. When it is necessary to increase the suction force under the condition of constant air flow by changing the number, or inclination angle, or diameter of the jet holes, the jet flange a4 can be directly replaced without detaching the axial inclined jet suction auxiliary exhaust mechanism a from the installed manifold system. FIG. 5 shows a schematic view of a drilling sand discharge line axial slanted jet pumping and discharging assist mechanism in replacing the jet flange in an exemplary embodiment of the drilling wellhead pumping and discharging assist system of the present invention. Fig. 6 shows an appearance effect diagram of the axial inclined jet pumping and discharging mechanism of the drilling sand discharge pipeline in an exemplary embodiment of the drilling wellhead pumping and discharging manifold system. When the injection flange needs to be replaced, firstly, the socket head cap screw A11 is unscrewed; then the gas injection shell A3, the central core female tube A5 and the central core male tube A9 are integrally moved to the right, and the central core male tube A9 is deeper into the upper core tube A8; injection flange a4 is then removed and replaced with another injection flange a4 that is ready.

The axial inclined jet pumping and discharging-assisting mechanism for the drilling sand discharge pipeline in the drilling wellhead pumping and discharging piping system has the following characteristics:

(1) the device can be used with a common pipeline, and also can be used with one or more of a radial azimuth angle stepless angle adjusting mechanism (authorized bulletin number: CN106437579B) for a gas drilling manifold, a universal adjusting short joint (authorized bulletin number: CN206220883U) for the gas drilling pipeline and a steering mechanism (CN207377518U) for a planetary gas drilling manifold to form a manifold system with more complete functions;

(2) by comprehensively applying different quantities and different positions to the axial inclined jet suction auxiliary discharge mechanism of the drilling sand discharge pipeline, the well head fluid (including the combustible gas and multiphase fluid which is returned to the ground surface in the drilling process) can be effectively sucked, the well head fluid (such as combustible gas, natural gas, multiphase fluid, gas, liquid and solid and the like) is sucked into the sand discharge manifold, and the local loss is greatly reduced in the flow conveying process of the sand discharge manifold;

(3) the axial inclined jet suction drainage-assisting mechanism can be independently connected to the gas injection pipeline for the drilling sand discharge pipeline, so that the suction capacity of the mechanism can be adjusted by adjusting the gas amount;

(4) the axial inclined jet pumping drainage-assisting mechanism of the drilling sand discharge pipeline can improve the safety of open-hole operations such as 'tripping and replacing rubber cores' under the condition that a small amount of natural gas is produced from the stratum, eliminates the safety risk problem possibly caused after combustible gas (such as natural gas and the like) of a shaft overflows a well mouth, improves the safety of gas drilling operation of a gas-containing layer section, and is more beneficial to the acceleration of gas drilling.

In another exemplary embodiment of the present invention, the telescopic line length adjustment mechanism for a drilling and sand discharging line may further include a first sealing member, a second sealing member, and a third sealing member on the basis of the structures of the above exemplary embodiments. Wherein the first sealing member may be disposed between the outer circumferential wall of the left portion of the primary extension pipe and the inner circumferential wall of the lower base pipe, thereby improving sealability that the outer circumferential wall of the left portion of the primary extension pipe and the inner circumferential wall of the lower base pipe are in contact connection with each other. For example, the first sealing member may be a seal ring and a seal groove that mate with each other. The second sealing member may be disposed between an outer circumferential wall of a left portion of the secondary extension pipe (e.g., a portion where the secondary extension pipe is inserted into the lower base flange) and an inner circumferential wall of the lower base flange, thereby improving sealability of the left portion of the secondary extension pipe and the inner circumferential wall of the lower base flange in contact connection with each other. For example, the second sealing member may be a seal ring and a seal groove that mate with each other. The third sealing member may be provided between the outer circumferential wall of the middle protrusion of the secondary extension pipe and the inner circumferential wall of the right portion of the primary extension pipe, thereby improving sealability of the contact connection between the outer circumferential wall of the middle protrusion of the secondary extension pipe and the inner circumferential wall of the right portion of the primary extension pipe. For example, the third sealing member may be a seal ring and a seal groove that mate with each other. However, the sealing member used in the present invention is not limited thereto, and other members capable of achieving an effective sealing function may be used.

In addition, the telescopic pipeline length adjusting mechanism can also comprise a liquid injection port. The liquid injection port can connect a space surrounded by the first, second, and third seal members to the first hydraulic press. For example, the liquid injection port may be a liquid injection port. Through will annotating the liquid mouth and be connected with hydraulic equipment, operating personnel can very conveniently realize pushing one-level extension pipe along the axial right side and pushing second grade extension pipe right through operating hydraulic equipment, realize the right removal of one-level extension pipe and the right removal of second grade extension pipe promptly. However, the present invention is not limited thereto, and for example, the rightward movement of the primary extension pipe and the rightward movement of the secondary extension pipe may be directly achieved by applying an external force to the right.

In another exemplary embodiment of the present invention, the telescopic line length adjustment mechanism may further include a fourth sealing member and a fifth sealing member on the basis of the first sealing member, the second sealing member and the third sealing member. The fourth sealing member may be disposed between an outer circumferential surface of a left portion of the upper base pipe and an inner circumferential surface of a right portion of the lower base pipe, so that sealability between the upper base pipe and the lower base pipe can be improved. For example, the fourth sealing member may be a seal ring and a seal groove that mate with each other. The fifth sealing member may be disposed between an inner circumferential surface of a right portion of the upper base pipe and an outer circumferential surface of a right portion of the secondary extension pipe, so that sealability at a contact portion of the upper base pipe and the secondary extension pipe can be improved. For example, the fifth sealing member may be a seal ring and a seal groove that cooperate with each other.

In addition, the telescopic pipeline length adjusting mechanism can also comprise a liquid return port. The liquid return port can connect a space surrounded by the first, third, fourth and fifth sealing members with the second hydraulic device. For example, the liquid return port may be an oil return port. Through being connected liquid return port and hydraulic equipment, operating personnel can very conveniently realize pushing one-level extension pipe along the axial left and pushing second grade extension pipe left through operating hydraulic equipment, realize the leftwards removal of one-level extension pipe and the leftwards removal of second grade extension pipe promptly. However, the present invention is not limited thereto, and for example, the leftward movement of the primary extension pipe and the leftward movement of the secondary extension pipe may be directly achieved by applying an external force to the left.

The telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline can be applied in different numbers and different positions in a combined manner. When the axial installation position of the pipeline has errors in the process of installing the manifold, the position of the connecting flange (or other connecting modes such as a coupling and the like) can be conveniently adjusted, and smooth installation is ensured.

FIG. 7a shows a schematic diagram of a telescoping line length adjustment mechanism for a drilling sand discharge line in an exemplary embodiment of a drilling wellhead pumping assisted discharge piping system of the present invention; fig. 7b shows a sectional view corresponding to the section H-H in fig. 7 a. FIG. 8 illustrates a schematic external view of a telescoping line length adjustment mechanism for a drilling sand discharge line in an exemplary embodiment of a drilling wellhead suction assisted discharge manifold system of the present invention. FIG. 9 is a schematic diagram illustrating a one-stage extension of a telescoping line length adjustment mechanism for a drill sand discharge line in an exemplary embodiment of a drill wellhead suction assisted discharge piping system of the present invention. FIG. 10 is a schematic diagram illustrating a two-stage extension of a telescoping line length adjustment mechanism for a drill sand discharge line in an exemplary embodiment of a drill wellhead suction assisted discharge manifold system of the present invention. Fig. 11 is a diagram illustrating the appearance of a telescopic line length adjustment mechanism for a drilling sand discharge line in an exemplary embodiment of a drilling wellhead pumping and discharge-aiding manifold system of the present invention.

As shown in fig. 7a and 7B, in an exemplary embodiment of the present invention, a telescopic line length adjustment mechanism B for a drilling sand discharge line may include: the device comprises a lower basic pipe flange B1, a first-stage extension pipe B2, a lower basic pipe B3, a first-stage extension pipe limiting ring B4, an upper basic pipe B5, a second-stage extension pipe B6, a second-stage extension pipe flange B7, an oil return opening B8, an inner hexagon screw B9 and an oil filling opening B10.

The left side of the lower base pipe flange B1 is an upstream inlet and is connected with an upstream pipeline through a flange (or a clamping hoop and the like). The left side of the secondary extension pipe B6 is inserted into the lower base pipe flange B1, and the right side is connected with the secondary extension pipe flange B7 through threads. The right side of the second-stage extension pipe flange B7 is a downstream outlet connected with a downstream pipeline. The secondary extension pipe flange B7 can be a flange connection, or can be other connection methods such as a clamp. The right end of the lower base pipe flange B1 is fastened with a lower base pipe B3 through a hexagon socket head cap screw B9.

The upper base pipe B5 and the lower base pipe B3 are in threaded connection. The first-level extension pipe limiting ring B4 is in threaded connection with the first-level extension pipe B2. The right side of the primary extension pipe B2 is provided with a stopper protrusion protruding inward in the radial direction. The middle part of the second-stage extension pipe B6 is provided with a middle convex part which protrudes outwards along the radial direction, and the middle convex part can enable the second-stage extension pipe to move left and right between the limiting ring B4 of the first-stage extension pipe B2. For example, the pipe body of the second-stage extension pipe can be processed by a sleeve pipe with the diameter of 244.5mm, the material and the mechanical property of the sleeve pipe meet the API standard, and the sleeve pipe has high internal pressure resistance and can ensure the safety of gas drilling operation. An oil filling port B10 is arranged on the right side of the lower base pipe flange B1 and is used for filling hydraulic oil. The lower base tube B3 is tapped on the outside and connected to the oil return port B8 by threads.

When the lower base pipe flange B1 is connected to the upstream pipeline, the parts are fixed except for the primary extension pipe B2 and the secondary extension pipe B6. The primary extension pipe B2 can move left and right along the axial direction in the space formed by the lower base flange B1 and the upper base pipe B5 to realize primary extension, and the state can be shown in figure 9. The secondary extension tube B6 can move axially in the left and right end faces of the inner annular groove formed by the limit protrusion of the primary extension tube B2 and the limit ring B4 of the primary extension tube to realize secondary extension, and the state can be as shown in fig. 10. Can design multistage flexible according to the demand, not only be restricted to the second grade and stretch out and draw back, and flexible total length also can design according to the demand. For example, the primary expansion and contraction dimension can be 12-18 mm, and the secondary expansion and contraction dimension can be 40-50 mm. As shown in fig. 7a, a sealing groove may be provided between the respective members, and sealing may be performed by a sealing ring.

The oil filling port B10 on the lower base pipe flange B1 and the oil return port B8 on the lower base pipe B3 can be respectively connected with a hand pump. When the extension is needed, the hand pump connected with the oil filling port B10 presses in hydraulic oil to push the first-stage extension pipe B2 and the second-stage extension pipe B6 to extend, and at the moment, the hand pump connected with the oil return port B8 is in a pressure relief state. When the hand pump connected with the oil return port B8 is required to be contracted, hydraulic oil is pressed in by the hand pump to push the first-stage extension pipe B2 and the second-stage extension pipe B6 to be contracted, and at the moment, the hand pump connected with the oil injection port B10 is in a pressure relief state. In the practical application process, when the condition of the hand pump is not met, the hand pump can be driven in a mode of not adopting hydraulic oil. The oil return port B8 and the oil filling port B10 are opened, so that the internal cavity is communicated with the outside, and the secondary extension pipe B6 can be extended or contracted in a manual mode.

Fig. 8 and 11 are schematic external views showing the telescopic line length adjustment mechanism for a drilling sand discharge line in the present exemplary embodiment.

The telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline in the drilling wellhead pumping and assisted discharge piping system can have the following characteristics:

(2) the telescopic pipeline length adjusting mechanisms are combined and applied in different quantities and different positions, so that the telescopic pipeline length adjusting mechanisms can be suitable for various conditions of installation of a drilling sand discharge manifold; when the axial installation position of the pipeline has errors in the process of installing the manifold, the position of the connecting flange (or other connecting modes such as a coupling and the like) can be conveniently adjusted, and smooth installation is ensured;

(3) the hydraulic mode of a hand pump can be adopted, and the extension and the shortening can be realized by adopting a manual dragging mode, so that the device is strong in operability, convenient and reliable;

(4) the extension length can be adjusted according to the requirement, and the device is very flexible and completely meets the requirement of the distance of pipeline butt joint in a drilling and sand discharging site;

(5) the telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline is mainly used in a gas drilling sand discharge manifold, but also can be used for connecting a gas supply manifold, and can be expanded and applied to hard manifold systems in other fields.

In summary, the beneficial effects of the invention include one or more of the following:

(1) the system comprises two large core modules of an axial inclined jet suction exhaust assisting mechanism and a telescopic axial length adjusting mechanism, and can also be provided with a radial azimuth angle stepless angle adjusting mechanism (authorized bulletin number: CN106437579B) for the existing gas drilling manifold, a universal adjusting short joint (authorized bulletin number: CN206220883U) for the gas drilling pipeline and a steering mechanism (CN207377518U) for the planetary gas drilling manifold to form a manifold system with more complete functions.

(2) By applying the axial inclined jet pumping and exhausting assisting mechanism and the telescopic axial length adjusting mechanism in combination in different sequences, different quantities and different positions, the well head fluid (such as combustible gas and multiphase fluid which returns to the ground surface in a drilling process) can be effectively pumped, the well head fluid (such as combustible gas: natural gas; such as multiphase fluid: gas-solid, gas-liquid-solid and the like) is pumped into the sand discharge manifold, the local loss is greatly reduced in the flowing and conveying process of the sand discharge manifold on the ground surface, and meanwhile, in the installation process of the manifold, when an error exists in the axial installation position, the position of a connecting flange (or other connecting modes, such as a coupling and the like) can be conveniently adjusted, and smooth installation is ensured.

(3) The axial inclined jet suction and discharge assisting mechanism can be independently connected into the gas injection pipeline, and the suction capacity of the mechanism is adjusted by adjusting the gas amount.

(4) The system can improve the safety of open wellhead operations such as tripping and replacing rubber cores under the condition that a small amount of natural gas is produced in the stratum, eliminates the safety risk problem possibly caused after combustible gas (such as natural gas and the like) of a shaft overflows from the wellhead, improves the safety of gas drilling operation in the gas-bearing stratum section, and is more beneficial to the acceleration and the play of the advantage of gas drilling.

Although the present invention has been described above in connection with the exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.

Claims

1. A well drilling well head suction and discharge assisting pipe collecting system comprises a plurality of hard pipeline pipes, wherein the hard pipeline pipes comprise a first hard pipeline pipe and a second hard pipeline pipe which are arranged along the flowing direction of fluid, and the well drilling well head suction and discharge assisting pipe collecting system is characterized by further comprising a well drilling sand discharge pipeline axial inclined jet suction and discharge assisting mechanism and a well drilling sand discharge pipeline telescopic pipeline length adjusting mechanism, wherein,

the axial inclined-jet pumping drainage-assisting mechanism for the drilling sand discharge pipeline comprises: a lower core pipe, a central core female pipe, a central core male pipe, an upper core pipe, a basic flange, a gas injection shell and an injection flange which are coaxially arranged along a first axial direction,

the base flange is provided with a left side part and a right side part which is fixedly connected with the gas injection shell through an anti-rotation component;

the lower core tube has a left side portion inserted into the base flange and brought into close contact with the inner circumferential wall of the base flange through the first sealing member, and a right side portion inserted into the left side of the injection flange and brought into close contact with the inner circumferential wall of the injection flange through the second sealing member;

the injection flange is positioned in the gas injection shell, and one or more than two injection holes are arranged on the circumferential wall of the injection flange in a penetrating way;

the central core main pipe is provided with a threaded inner wall and a left side part which is inserted into the gas injection shell and is connected with the gas injection shell in a non-rotatable mode, and the left side part of the central core main pipe is in close contact with the gas injection shell through a third sealing piece;

the central male pipe is provided with a left side part which is inserted into the right side of the injection flange and is tightly contacted with the inner circumferential wall of the injection flange through a fourth sealing member, a right side part which is inserted into the left side of the upper core pipe and is tightly contacted with the inner circumferential wall of the upper core pipe through a fifth sealing member, threads which are arranged on the outer wall of the central male pipe and can be matched with the inner wall of the threads of the central female pipe, and a rotary matching part which can enable the central male pipe to rotate under the action of external force, wherein the rotary matching part can enable the central male pipe to move leftwards or rightwards through rotation so as to correspondingly close or open the injection hole through the left end of the left side part of the central male pipe;

the upper core tube is provided with a right side part, and the left side of the upper core tube is spaced from the right end of the central core main tube;

the gas injection shell is provided with one or more than two gas injection joints which can be used for injecting external gas and are communicated with the injection hole;

the telescopic pipeline length adjusting mechanism for the drilling sand discharge pipeline comprises a lower base flange, a lower base pipe, an upper base pipe, a first-stage extension pipe, a limiting ring and a second-stage extension pipe which are coaxially arranged along a second axial direction, wherein,

the lower base flange has a left side portion and a right side portion provided with an outer protrusion portion protruding outward in the radial direction;

the lower base pipe is provided with a left side part fixedly connected with the outer protruding part of the right side part of the lower base flange through an anti-rotation component, and a right side part provided with a first thread on the inner circumferential surface;

the upper base pipe comprises a left side part with a first inner diameter and a right side part with a second inner diameter, wherein the first inner diameter is larger than the second inner diameter, and second threads matched with the first threads of the right side part of the lower base pipe are arranged on the outer circumferential wall of the left side part of the upper base pipe;

the first-stage extension pipe comprises a left side part with a first outer diameter, a right side part with a second outer diameter and a limiting protrusion part arranged on the inner circumferential surface of the right side part of the first-stage extension pipe, wherein the first outer diameter is larger than the first inner diameter, the second outer diameter is smaller than the first inner diameter, the left side part of the first-stage extension pipe is positioned between the left end surface of the left side part of the upper base pipe and the right end surface of the outer protrusion part of the lower base flange, the right side part of the first-stage extension pipe is positioned between the left end surface of the right side part of the upper base pipe and the right end surface of the outer protrusion part of the lower base flange, and the first-stage extension pipe can move leftwards or rightwards in a space formed by the outer protrusion part of the lower base flange, the lower base pipe and the upper base pipe;

the limiting ring is fixedly connected to the inner circumferential wall of the left side part of the primary extension pipe;

the secondary extension pipe comprises a left side part with a third outer diameter, a middle convex part with a fourth outer diameter and a right side part with a fifth outer diameter which are sequentially connected, wherein the third outer diameter is smaller than the fourth outer diameter, the fifth outer diameter is smaller than the fourth outer diameter and is equal to the second inner diameter, the left side part of the secondary extension pipe penetrates through the limiting ring and then is inserted into the right side part of the lower base flange, and the middle convex part is positioned between the limiting protruding part and the limiting ring of the primary extension pipe so that the secondary extension pipe can move leftwards or rightwards between the limiting protruding part and the limiting ring of the primary extension pipe;

the left side part of a basic flange of the axial inclined spraying, pumping and discharging-assisting mechanism of the drilling sand discharging pipeline is connected with a well head, and the right side part of an upper core pipe of the axial inclined spraying, pumping and discharging-assisting mechanism of the drilling sand discharging pipeline is connected with the inlet end of a first hard pipeline body; or the left side part of a basic flange of the axial inclined jet suction drainage assisting mechanism of the drilling sand discharge pipeline is connected with the outlet end of the first hard pipeline body, and the right side part of an upper core pipe of the axial inclined jet suction drainage assisting mechanism of the drilling sand discharge pipeline is connected with the inlet end of the second hard pipeline body;

the left side part of the lower base flange of the telescopic pipeline length adjusting mechanism is connected with the outlet end of the previous hard pipeline pipe body in two mutually adjacent hard pipeline pipe bodies in the plurality of hard pipeline pipe bodies, and the right side part of the secondary extension pipe of the telescopic pipeline length adjusting mechanism is connected with the inlet end of the next hard pipeline pipe body in the two mutually adjacent hard pipeline pipe bodies; or the left side part of the lower base flange of the telescopic pipeline length adjusting mechanism is connected with the right side part of the upper core pipe of the drilling sand discharge pipeline axial inclined-jet suction drainage-assisting mechanism, and the right side part of the secondary extension pipe of the telescopic pipeline length adjusting mechanism is connected with the inlet end of the hard pipeline body correspondingly positioned behind the drilling sand discharge pipeline axial inclined-jet suction drainage-assisting mechanism; or the right side part of the secondary extension pipe of the telescopic pipeline length adjusting mechanism is connected with the left side part of the basic flange of the axial inclined-jet suction drainage-assisting mechanism of the drilling sand discharge pipeline, and the left side part of the lower basic flange of the telescopic pipeline length adjusting mechanism is connected with the outlet end of the hard pipeline body correspondingly positioned in front of the axial inclined-jet suction drainage-assisting mechanism of the drilling sand discharge pipeline.

2. The system of claim 1, wherein the number of the drilling wellhead pumping and discharging-assisting mechanisms is one or more than two.

3. The system of claim 2, wherein the drilling wellhead pumping and discharge-aiding mechanism is disposed at a wellhead location and/or at a location downstream of a pipeline turn.

4. The system of claim 1, wherein the pumping and discharge aiding mechanism further comprises an upper core tube flange capable of connecting the right side portion of an upper core tube to an inlet end of a first hard line tube or to an inlet end of a second hard line tube.

5. The system of claim 1, wherein the pumping and discharge-assisting mechanism further comprises an upper core tube clamping member capable of clamping a right side portion of the central core male tube with the upper core tube and limiting axial displacement between the upper core tube and the central core male tube.

6. The system of claim 1, wherein a portion of the left side of the central core main pipe is provided with a polygonal cross-section, and the portion of the gas injection housing that mates with the portion of the left side of the central core main pipe has a corresponding polygonal recess to limit the mutual rotation between the central core main pipe and the gas injection housing.

7. The drilling wellhead suction and discharge assist manifold system of claim 1, wherein one or more of the first, second, third, fourth, and fifth seals comprise cooperating seal rings and seal grooves.

8. The system of claim 1, wherein the pumping and discharging aid mechanism further comprises a gas compression device, and a gas outlet of the gas compression device is connected to the gas injection joint of the gas injection housing.

9. The system of claim 1, wherein the right side portion of the base flange is fixedly connected to the gas injection housing by a detachable anti-rotation member.

10. The system of claim 1, wherein the number of the telescopic line length adjustment mechanisms for the drilling sand discharge line is one or more.

11. The system of claim 10, wherein the retractable tubing length adjustment mechanism is disposed between the adjacent drilling and sand discharge tubing axial direction inclined jet suction drainage mechanism and the hard tubing body, and/or between two adjacent hard tubing bodies.

12. The system of claim 1, wherein the telescopic line length adjustment mechanism further comprises a secondary extension pipe flange capable of connecting the right side of a secondary extension pipe to an inlet end of a second hard line pipe or to an inlet end of the latter hard line pipe.

13. The system of claim 1, wherein the telescopic line length adjustment mechanism further comprises a first sealing member disposed between the outer circumferential wall of the left side portion of the primary extension pipe and the inner circumferential wall of the lower base pipe, a second sealing member disposed between the outer circumferential wall of the left side portion of the secondary extension pipe and the inner circumferential wall of the lower base flange, and a third sealing member disposed between the outer circumferential wall of the center protrusion of the secondary extension pipe and the inner circumferential wall of the right side portion of the primary extension pipe.

14. The system of claim 13, wherein the telescoping tubing string length adjustment mechanism further comprises a fluid injection port configured to connect the space enclosed by the first, second, and third sealing members to the first hydraulic press.

15. The drilling wellhead suction and discharge assist manifold system of claim 13, wherein one or more of the first, second, and third seal members comprise cooperating seal rings and seal grooves.

16. The system of claim 13, wherein the telescoping tubing string length adjustment mechanism further comprises a fourth sealing member disposed between a left side of the upper base pipe and a right side of the lower base pipe and a fifth sealing member disposed between a right side of the upper base pipe and a right side of the secondary extension pipe.

17. The system of claim 16, wherein the telescoping tubing string length adjustment mechanism further comprises a fluid return port configured to connect the space enclosed by the first, third, fourth, and fifth seal members to the second hydraulic device.

18. The drilling wellhead suction and discharge assist manifold system of claim 16, wherein the fourth and/or fifth seal member comprises cooperating seal rings and seal grooves.

19. The system of claim 1, wherein the stop collar is fixedly connected to the inner circumferential wall of the left side portion of the primary extension pipe by a screw thread.