CN114876370B - Multi-point directional jet drilling tool and method of use thereof - Google Patents
Multi-point directional jet drilling tool and method of use thereof Download PDFInfo
- Publication number
- CN114876370B CN114876370B CN202210615136.8A CN202210615136A CN114876370B CN 114876370 B CN114876370 B CN 114876370B CN 202210615136 A CN202210615136 A CN 202210615136A CN 114876370 B CN114876370 B CN 114876370B
- Authority
- CN
- China
- Prior art keywords
- assembly
- guider
- whipstock
- body section
- shell assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Abstract
The invention relates to a multi-point directional jet drilling tool and a using method thereof, wherein the tool comprises a plurality of stages of directional jet sections, and each directional jet section comprises a shell assembly and a guider assembly; the shell assembly is provided with an injection window, and the injection window is provided with a whipstock which can be fixed or axially slide; the guider assembly can push the corresponding whipstock to axially slide; the guider assembly comprises a guider body, a liquid circulation channel and a spraying pore channel are arranged on the guider body in an isolated mode, a spray head is arranged in the spraying pore channel in a sliding mode, a high-pressure pipe penetrates through the spraying pore channel in a sealing and sliding mode, and the spray head can drive the high-pressure pipe to drill in a stratum under the action of hydraulic force so as to communicate with a reservoir body around a well; the outer diameter of the guider assembly of the multi-stage directional injection joint is gradually increased from bottom to top. The one-time well completion pipe column realizes multi-point directional jet drilling, increases the communication probability of the oil and gas well reservoir body, and achieves the purpose of increasing the yield of the oil and gas well.
Description
Technical Field
The invention relates to the technical field of yield increasing transformation of petroleum oil and gas reservoirs, in particular to a multi-point directional jet drilling tool for a fracture-cavity type oil and gas reservoir and a using method thereof.
Background
In fracture-cavity reservoir production, communicating as many hydrocarbon reservoirs as possible is an important way to increase production of oil and gas wells. In the prior art, the general acidizing and fracturing of the whole shaft of the open hole well is usually adopted, although the process is simple and convenient to operate, the probability of communicating oil and gas reservoirs is low due to uneven ground stress distribution and random formation cracking points, and especially a large number of reservoirs are not communicated in the non-principal stress direction around the well, so that the effect of the yield-increasing operation of the oil and gas well is not obvious. For this reason, a fixed-point jet fracturing process is adopted, but the application scale of the method is also limited due to the limitation of conditions such as well depth, nozzle materials, high-pressure pumps, perforation communication range and the like and the fact that the jet orientation cannot be accurately oriented.
The method can generate a pore canal with a certain length, but a jet hose is conveyed from the ground, liquid is greatly consumed along the process, the hydraulic energy utilization rate is low, the rock breaking drilling effect is limited, meanwhile, a small pore canal of a main pipe needs to be perforated in advance, the process is complicated, only one pore canal can be drilled in the stratum in each operation, if a plurality of pore canals are drilled, a pipe column needs to be pulled out and taken down for corresponding construction for many times, the operation is complicated, the time consumption is too long, the construction cost is higher, and the applicability of the method is reduced.
Therefore, the inventor provides a multi-point directional jet drilling tool and a using method thereof by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a multi-point directional jet drilling tool and a using method thereof, which can be used for overcoming the problems in the prior art.
The invention aims to realize the purpose, and the multi-point directional jet drilling tool comprises a plurality of stages of directional jet sections, wherein each directional jet section comprises a shell assembly and a guider assembly, and the shell assemblies are sequentially communicated along the axial direction;
a first central hole is formed in the shell assembly in a through mode along the axial direction, a spraying window is formed in the side wall of the shell assembly, an oblique device is arranged at the position of the spraying window and can be fixed in the first central hole or slide along the axial direction of the first central hole, a second central hole is formed in the oblique device in a through mode along the axial direction, and the inner diameter size of the second central hole of the multi-stage directional spraying joint is increased from bottom to top in a step-by-step mode;
the guider assembly can push the corresponding whipstock to axially slide; the guider assembly comprises a guider body, a liquid circulation channel and a spraying pore channel are arranged on the guider body in an isolated mode, two ends of the liquid circulation channel can be communicated with the first central hole, and the first end of the liquid circulation channel can be closed by throwing a ball; the injection pore channel can be communicated with the corresponding injection window to directionally inject; a spray head is arranged in the spray hole in a sliding mode, a high-pressure pipe penetrates through the spray hole in a sealing and sliding mode, the first end of the spray head is communicated with the first end of the high-pressure pipe, the second end of the high-pressure pipe is connected with a steel wire rope and can be communicated with the first center hole, and the spray head can drive the high-pressure pipe to drill in the stratum under the action of hydraulic force to communicate with the around-well reservoir body; the guide assemblies of all the stages of directional spraying sections can be respectively arranged corresponding to all the whipstocks, and the outer diameter sizes of the guide assemblies of the multi-stage directional spraying sections are gradually increased from bottom to top.
In a preferred embodiment of the present invention, the guider body includes a first body section, a second body section and a third body section, which are sequentially arranged, a first duct is arranged in the first body section, a second duct is arranged in the second body section, the high-pressure pipe passes through the first duct in a sealing manner, and the first duct and the second duct are communicated to form the injection duct.
In a preferred embodiment of the present invention, the outer wall of the first body segment can be in sealing abutment with the inner wall of the housing assembly, and a third duct isolated from the first duct is provided in the first body segment; the outer wall of the third body section can be in sealing abutting joint with the inner wall of the shell assembly, and a third center hole is axially arranged on the third body section in a through mode; the outer diameter of the second body section is smaller than the inner diameter of the shell assembly, an annular gap is formed between the outer wall of the second body section and the inner wall of the shell assembly, a fourth pore passage capable of communicating the third pore passage with the annular gap is arranged on the second body section, and a fifth pore passage capable of communicating the annular gap with the third central hole is also arranged on the second body section; the third pore canal, the fourth pore canal, the annular gap, the fifth pore canal and the third central hole are communicated to form the liquid circulation channel.
In a preferred embodiment of the present invention, a first end of the third body segment is provided with a first spiral arc surface, a first end of the whipstock is provided with a second spiral arc surface, and the first spiral arc surface and the second spiral arc surface can cooperate to directionally communicate the jetting duct with the corresponding jetting window.
In a preferred embodiment of the present invention, a combined sealing structure is disposed inside the third duct, and the high-pressure pipe seal penetrates through the combined sealing structure.
In a preferred embodiment of the present invention, a first step portion capable of stopping and limiting the nozzle is disposed in the second duct.
In a preferred embodiment of the present invention, the high pressure pipe is connected to the steel wire rope through a filter joint.
In a preferred embodiment of the present invention, the whipstock is fixedly attached to the housing assembly by shear pins.
In a preferred embodiment of the present invention, a second step portion is disposed on an inner wall of the housing assembly, and the second step portion is used for axially limiting the whipstock.
The object of the invention is also achieved by a method of using a multi-point directional jet drilling tool as described above, comprising the steps of:
step a, determining the grade number of a directional jet joint according to the distribution condition of a stratum reservoir body, connecting a shell assembly requiring the grade number on an operation pipe column, and fixedly connecting each whipstock to the shell assembly through a shearing pin; each shell assembly is lowered into an operation position along with an operation pipe column;
b, inserting the guider assembly at the lowest stage into the shell assembly at the lowest stage through a steel wire rope;
c, when the guider assembly is lowered to the position of the whipstock in the shell assembly, putting a pressure-building ball into the operation tubular column to plug a liquid circulation channel on the guider body, pumping liquid into the operation tubular column to generate axial throttling liquid pressure on the guider assembly, and matching the guider assembly and the whipstock in place;
d, continuing pumping and suppressing pressure in the operation pipe column, feeding the steel wire rope downwards for a certain distance, and enabling the guider assembly to drive the whipstock to move downwards under the action of hydraulic thrust when the pressure reaches a certain value until the injection pore channel is communicated with the injection window;
e, continuously pumping in the operation pipe column, forming high-speed jet flow at a spray head to break rock, slowly lowering a steel wire rope, driving a high-pressure pipe to drill in the stratum under the action of traction force generated by hydraulic power by the spray head, and continuously drilling a reservoir around the dredging well of the ditch;
and f, repeating the steps b to e to finish the multi-stage directional jet drilling.
From the above, the multi-point directional jet drilling tool and the use method thereof provided by the invention have the following beneficial effects:
the multi-point directional injection drilling tool comprises a multi-stage directional injection joint, wherein large-displacement pump injection is carried out in an operation pipe column, the high-pressure pipe is controlled to enter at a controlled speed by dragging a steel wire rope, a front-end sprayer breaks rock at a high speed and is strongly dragged, so that long-distance injection drilling can be realized, and the drilling speed is controllable and stable by dragging the steel wire; according to the invention, guider assemblies with different diameters can be put in for multiple times according to the distribution condition of stratum reservoirs, corresponding matched whipstocks at all levels are used for completing the communication between injection pore canals at all levels and injection windows, the one-time well completion pipe column realizes multi-point directional injection drilling, and the reservoirs at the periphery of a well are fully communicated; the guider assembly is matched with the whipstock through a spiral arc surface at the end part to realize the steering of the spray head; and the injection windows on the shell assembly are opened in sequence, and finally the purpose of communicating the reservoir body of the oil well in a fixed point, multiple times, large range and high efficiency is achieved, so that the communication probability of the reservoir body of the oil and gas well is increased, and the purpose of increasing the yield of the oil and gas well is achieved.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: is a schematic view of the multi-point directional jet drilling tool of the present invention.
FIG. 2 is a schematic diagram: is a schematic diagram of a directional jet node of the present invention.
FIG. 3: is a schematic diagram of the housing assembly and whipstock of the present invention.
FIG. 4 is a schematic view of: is a schematic view of the whipstock of the present invention.
FIG. 5: is a schematic view of the guide assembly of the present invention.
FIG. 6: is an enlarged view of the point I in FIG. 5.
FIG. 7: is a state diagram of the present invention when the director assembly is not in place.
FIG. 8: is a state diagram of the deflector assembly of the present invention as it reaches the whipstock.
FIG. 9: is a state diagram of the guider assembly of the invention when pushing the whipstock to slide.
FIG. 10: the invention is a state diagram of the jet drilling of the high-pressure pipe in the stratum driven by the nozzle.
In the figure:
100. a multi-point directional jet drilling tool;
101. a directional jet section;
1. a housing assembly; 10. a first central aperture; 11. an ejection window; 12. a second step portion;
2. a whipstock; 20. a second central aperture; 21. a second spiral arc surface; 22. shearing the pin; 23. a first seal ring; 24. a second seal ring;
3. a director assembly;
301. a first duct; 302. a second aperture; 3021. a first step portion; 303. a third porthole; 304. a fourth porthole; 305. a fifth porthole;
31. a guider body; 311. a first body section; 312. a second body section; 313. a third body section; 3130. a third central aperture; 3131. a first spiral arc surface;
32. a spray head;
33. a high pressure pipe;
34. a wire rope;
35. a third seal ring;
36. a combined sealing structure; 361. sealing the short section body; 362. a high-pressure pipe is passed through a hole; 363. a seal ring; 364. a fourth seal ring;
37. a filter adapter;
4. and (5) building a pressure-building ball.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 10, the present invention provides a multi-point directional jet drilling tool 100, as shown in fig. 1, comprising a multi-stage directional jet section 101, as shown in fig. 2, each directional jet section 101 respectively comprises a housing assembly 1 and a guide assembly 3, the plurality of housing assemblies 1 are sequentially communicated in an axial direction; the number of stages of the directional jet 101 is determined by the formation reservoir distribution; according to the requirements of reservoir body reconstruction in different depths and different directions, a plurality of shell assemblies 1 can be connected to an operation pipe column (prior art) according to a design azimuth, and the shell assemblies are lowered into an operation position along with the operation pipe column (prior art, well completion pipe column).
As shown in fig. 3, a first central hole 10 is axially arranged on the housing assembly 1 in a penetrating manner, a spraying window 11 is arranged on the side wall of the housing assembly 1, a whipstock 2 is arranged at the spraying window 11, the whipstock 2 can be fixed in the first central hole 10 or can axially slide along the first central hole 10, a second central hole 20 is axially arranged on the whipstock 2 in a penetrating manner, the structural forms of the whipstocks 2 are the same, and the difference is the inner diameter size of the second central hole 20, and the inner diameter size of the second central hole 20 of the multi-stage directional spraying joint is gradually increased from bottom to top (the inner diameter size of the second central hole 20 at the bottom is the smallest, and the inner diameter size of the second central hole 20 at the top is the largest). The two ends of the shell assembly 1 are provided with tubing buckles which can be connected with an operation pipe column (a well completion pipe column) and other tools.
The guider assembly 3 can push the corresponding whipstock 2 to axially slide; as shown in fig. 5, the guider assembly 3 includes a guider body 31, a liquid circulation channel and a spraying pore channel are separately arranged on the guider body, both ends of the liquid circulation channel can be communicated with the first central hole 10, and the first end of the liquid circulation channel can be closed by throwing a ball; the injection port can communicate with the corresponding injection window 11 to direct the injection.
As shown in fig. 5, a nozzle 32 is slidably disposed in the injection duct, a high-pressure pipe 33 is further slidably disposed in the injection duct in a sealing manner, a first end of the nozzle 32 is communicated with a first end of the high-pressure pipe 33, a second end of the high-pressure pipe 33 is connected with a steel wire rope 34 and can be communicated with the first central hole 10, and the nozzle 32 can drive the high-pressure pipe 33 to drill in the stratum under the action of hydraulic force to communicate with the around-well reservoir body; the steel wire rope 34 sends the guider body 31 to a required spraying position, and the dragging of the steel wire rope 34 can realize the controllable and stable drilling speed; in the running process of the guider assembly 3, liquid pumped in from the wellhead passes through the liquid circulation channel to ensure the running process to be smooth, when directional injection is needed, the injection pore channel is communicated with the injection window 11, a ball is thrown to the first end of the liquid circulation channel to seal the liquid circulation channel, and the liquid pumped in from the wellhead is directionally injected to the stratum through the high-pressure pipe 33 and the spray head 32.
In order to ensure the smooth descending of the guide assemblies 3 of all stages, the guide assemblies 3 of all stages of directional injection sections can be respectively arranged corresponding to the whipstocks 2, and the outer diameter sizes of the guide assemblies 3 of the multi-stage directional injection sections are gradually increased from bottom to top (the outer diameter size of the guide assembly 3 at the lowest part is the smallest, and the outer diameter size of the guide assembly 3 at the uppermost part is the largest). Through the guider assemblies 3 with different diameters and the matched whipstocks 2, the guider assemblies 3 can be put into the casing assemblies 3 for multiple times, the jet windows 11 on the casing assemblies are sequentially opened, and jet drilling is carried out to communicate all reservoirs so as to realize the yield increase of the oil-gas well.
In fracture-cave type oil and gas reservoir, oil gas exists with reservoir body gathering mode more, all reservoir bodies can't be communicated to main well track in the oil drilling, later stage pit shaft bore hole section general acidizing fracturing position randomness is high, can't realize the accurate communication of multiple spot, the fracturing effect is not obvious, tradition sidetracking is with high costs, radial drilling is bored and is leaded to drilling efficiency not high because of hydraulic energy transfer inefficiency, it is little to receive the fluid passage size in the deep well, on-the-way pressure consumption is high, the hydraulic energy that the broken rock was bored is not enough to lead to drilling efficiency, the not high drilling depth is short. In the multi-point directional jet drilling tool, the high-displacement pump is used for pumping in the operation pipe column, the steel wire rope is provided with the high-pressure pipe and the spray head for large-displacement jet drilling, liquid directly enters the high-pressure pipe through the upper operation oil pipe and is sprayed out through the spray head, the hydraulic energy utilization rate is high, the drilling efficiency is high, the self-advancing force at the spray head is large, the traction is strong, the drilling depth is far, and the drilling speed is controllable and stable by dragging the steel wire.
The multi-point directional jet drilling tool 100 can be designed according to the communication requirements of a plurality of reservoirs above and below the stratum and by combining the position depth of the reservoirs in the longitudinal direction and the position of the reservoirs in the circumferential direction. The multistage shell assembly 1 is connected to an operation pipe column (well completion pipe column) according to the operation depth position, the relative position of the injection window 11 on each shell assembly is the vertical projection position of each reservoir body, and after the operation pipe column (well completion pipe column) is in place, the arrangement azimuth angle of any injection hole is determined through a conventional gyro orientation process. And (3) opening corresponding injection windows 11 by descending guide assemblies (the outer diameters of which are different and are matched with the whipstock 2 in the shell assembly) of all stages, and implementing multi-point directional injection drilling.
The multi-point directional injection drilling tool comprises a multi-stage directional injection joint, wherein large-displacement pump injection is carried out in an operation pipe column, the high-pressure pipe is controlled to enter at a controlled speed by dragging a steel wire rope, a front-end sprayer breaks rock at a high speed and is strongly dragged, so that long-distance injection drilling can be realized, and the drilling speed is controllable and stable by dragging the steel wire; according to the distribution condition of stratum reservoirs, guider assemblies with different diameters can be thrown for multiple times, corresponding matched whipstocks at all levels are used for completing the communication between injection pore passages at all levels and injection windows, the one-time well completion pipe column realizes multi-point directional injection drilling, and the reservoirs at the periphery of a well are fully communicated; and the injection windows on the shell assembly are opened in sequence, and the purpose of communicating the reservoir body of the oil well in a fixed-point, multiple, large-range and high-efficiency manner is finally realized, so that the communication probability of the reservoir body of the oil and gas well is increased, and the purpose of increasing the yield of the oil and gas well is achieved.
Further, as shown in fig. 5, the guider body 31 includes a first body section 311, a second body section 312 and a third body section 313 which are sequentially arranged, a first duct 301 is arranged in the first body section 311, a second duct 302 is arranged in the second body section 312, the high-pressure pipe 33 passes through the first duct 301 in a sealing manner, and the first duct 301 and the second duct 302 are communicated to form a spraying duct. The spray head 32 and the high-pressure pipe 33 penetrate through the injection pore canal in a sliding mode, pumping is carried out continuously, high-speed jet flow rock breaking is formed at the position of the spray head 32, the steel wire rope 34 is slowly put down, the spray head 32 drives the high-pressure pipe 33 to drill in the stratum under the action of traction force generated by hydraulic power, and the ditch is continuously drilled into a surrounding reservoir body.
In the present embodiment, a first step portion 3021 capable of locking the stopper head 32 is provided in the second port 302. In the lowering process of the guide assembly 3, the wire rope 34 suspends the guide body 31 by the first step 3021, and slowly lowers it.
Further, as shown in fig. 5, the outer wall of the first body section 311 can be in sealing contact with the inner wall of the housing assembly 1, and in the present embodiment, a third seal ring 35 is provided between the outer wall of the first body section 311 and the inner wall of the housing assembly 1; a third bore 303 isolated from the first bore 301 is provided in the first body segment 311; the outer wall of the third body section 313 can be in sealing abutting contact with the inner wall of the shell assembly 1, and a third central hole 3130 is axially arranged on the third body section 313 in a penetrating manner; the outer diameter of the second body section 312 is smaller than the inner diameter of the housing assembly 1, the outer wall of the second body section 312 and the inner wall of the housing assembly 1 form an annular gap, a fourth hole 304 capable of communicating the third hole 303 and the annular gap is arranged on the second body section 312, and a fifth hole 305 capable of communicating the annular gap and the third center hole 3130 is also arranged on the second body section 312; the third orifice passage 303, the fourth orifice passage 304, the annular gap, the fifth orifice passage 305 and the third central orifice 3130 are connected to form a liquid circulation passage.
The wireline 34 seals the pilot assembly to the housing assembly during the process of feeding the pilot assembly 3 into the injection service position in the service string (completion string) if and only if it reaches the housing assembly 1. The liquid circulation channel is in a communicated state, and the requirement of conventional liquid flow is met.
Further, as shown in fig. 4 and 5, a first end of the third body segment 313 is provided with a first spiral arc surface 3131, a first end of the whipstock 2 is provided with a second spiral arc surface 21, and the first spiral arc surface 3131 can cooperate with the second spiral arc surface 21 to make the jetting duct directionally communicate with the corresponding jetting window 11.
When the guider assembly 3 is put into the position of the whipstock 2 in the shell assembly, the pressure-holding ball 4 is put in the operation pipe column to block the liquid circulation channel on the guider body 31, the liquid pumped in the operation pipe column generates the axial throttling liquid pressure to the guider body 31, under the action of the throttling liquid pressure, the guider assembly 3 is in place, the first spiral arc surface 3131 is matched with the second spiral arc surface 21 to convert the axial movement in the putting process into circumferential rotation, the guider body 31 rotates in the circumferential direction until the injection pore channel is communicated with the injection window 11 (the axes are coplanar), and the injection direction orientation is realized.
Further, as shown in fig. 5 and 6, the combined sealing structure 36 is hermetically disposed in the third orifice 303, and the high-pressure pipe 33 is hermetically passed through the combined sealing structure 36. The combined sealing structure 36 comprises a sealing nipple body 361, a high-pressure pipe via hole 362 is axially arranged on the sealing nipple body 361 in a penetrating manner, a sealing ring 363 capable of radially extending and retracting is arranged in the high-pressure pipe via hole 362, and a fourth sealing ring 364 is arranged between the outer wall of the sealing nipple body 361 and the inner wall of the third hole channel 303.
Further, as shown in fig. 5, the high-pressure pipe 33 is connected to the wire rope 34 through a filter joint 37. The high-pressure pipe 33 is hermetically and threadedly connected with the nozzle 32, and the wire rope 34, the filter joint 37, the high-pressure pipe 33 and the nozzle 32 are integrally connected by threads.
The guider body 31 forms a rope suspension with the steel wire rope 34, the filtering joint 37, the high-pressure pipe 33 and the nozzle 32 through the first step 3021, and freely falls to the corresponding whipstock in the vertical well by gravity (the inner diameter of other whipstocks above the whipstock is larger than that of the whipstock). And the drilling fluid can be pushed to a matched whipstock in the horizontal well in a pumping mode (similar to a pumping bridge plug process).
Further, as shown in fig. 3, the whipstock 2 is fixedly attached to the housing assembly 1 by shear pins 22. The whipstock 2 is provided with two first sealing rings 23 and two second sealing rings 24 which are axially arranged at intervals, when the whipstock 2 is fixedly connected to the shell assembly 1 through the shearing pin 22, the first sealing rings 23 and the second sealing rings 24 are positioned at two sides of the injection window 11, and the first sealing rings 23 and the second sealing rings 24 realize the isolation of the injection window 11 from the pressure in the working string.
Further, as shown in fig. 3, a second step portion 12 is disposed on the inner wall of the housing assembly 1, and the second step portion 12 is used for axially limiting the whipstock 2.
When the guider assembly 3 is put into the position of the whipstock 2 in the shell assembly, the pressure-holding ball 4 is put in the operation pipe column to block the liquid circulation channel on the guider body 31, the pump continues to hold the pressure in the operation pipe column, the steel wire rope 34 is sent downwards for a short distance (the distance from the spray head 32 to the spray window 11), when the pressure reaches a certain value, the shearing pin 22 is sheared, the guider assembly 3 with the whipstock 2 descends under the action of hydraulic thrust until the whipstock 2 axially abuts against the second step part 12 at the lower end of the shell assembly 1, and at the moment, the spray channel is communicated with the spray window 11 (the axes are coplanar).
The method of using the multi-point directional jet drilling tool 100 of the present invention comprises the steps of:
step a, determining the grade number of a directional injection joint 101 according to the distribution condition of a stratum reservoir body, connecting a required grade number of shell assemblies 1 on an operation pipe column (in the prior art) according to a designed azimuth angle, and fixedly connecting each whipstock 2 to the shell assemblies through shear pins respectively; each shell assembly 1 is put into a well along with an operation pipe column (the prior art, a well completion pipe column) until reaching an operation position;
b, descending the guider assembly 3 at the lowest level into the shell assembly 1 at the lowest level through a steel wire rope 34;
as shown in fig. 7, the guider body 31 forms a rope suspension with the steel wire rope 34, the filter joint 37, the high-pressure pipe 33 and the spray head 32 through the first step 3021, and freely falls to the corresponding whipstock by gravity in the vertical well; the drilling fluid can be pushed to a matched whipstock in a horizontal well in a pumping mode (similar to a pumping bridge plug process);
step c, as shown in fig. 8, when the guider assembly 3 is lowered to the position of the whipstock 2 in the housing assembly, the pressure building ball 4 is put into the operation string to plug the liquid circulation channel on the guider body 31, the liquid pumped into the operation string generates a throttling hydraulic pressure along the axial direction to the guider body 31, the guider assembly 3 and the whipstock are matched in place under the action of the throttling hydraulic pressure, and the first spiral arc surface 3131 is matched with the second spiral arc surface 21 to convert the axial movement in the lowering process into circumferential rotation;
d, as shown in fig. 9, continuing pumping and suppressing the pressure in the operation pipe column, sending the steel wire rope 34 downwards for a short distance (the distance from the spray head 32 to the spray window 11), when the pressure reaches a certain value, shearing the shear pin 22, enabling the guider assembly 3 to take the whipstock 2 to descend under the action of hydraulic thrust until the whipstock 2 axially abuts against the second step part 12 at the lower end of the shell assembly 1, and at the moment, communicating the spray hole with the spray window 11 (the axes are coplanar);
e, continuously pumping in the operation pipe column, forming high-speed jet flow at the nozzle 32 to break rock, and slowly lowering the steel wire rope 34, wherein the nozzle 32 drives the high-pressure pipe 33 to drill in the stratum under the action of traction force generated by hydraulic force as shown in figure 10, and continuously drilling the reservoir around the ditch open well;
and f, repeating the steps b to e to finish the multi-stage directional jet drilling.
From the above, the multi-point directional jet drilling tool and the use method thereof provided by the invention have the following beneficial effects:
the multi-point directional jet drilling tool comprises a multi-stage directional jet section, wherein large-displacement pump injection is carried out in an operation pipe column, high-pressure pipe control is dragged by a steel wire rope to enter at a controlled speed, a front-end spray head breaks rock at a high speed and is pulled strongly, long-distance jet drilling can be realized, and the drilling speed is controllable and stable by dragging the steel wire; according to the invention, guider assemblies with different diameters can be put in for multiple times according to the distribution condition of stratum reservoirs, corresponding matched whipstocks at all levels are used for completing the communication between injection pore canals at all levels and injection windows, the one-time well completion pipe column realizes multi-point directional injection drilling, and the reservoirs at the periphery of a well are fully communicated; the guider assembly is matched with the whipstock through a spiral arc surface at the end part to realize the steering of the spray head; and the injection windows on the shell assembly are opened in sequence, and the purpose of communicating the reservoir body of the oil well in a fixed-point, multiple, large-range and high-efficiency manner is finally realized, so that the communication probability of the reservoir body of the oil and gas well is increased, and the purpose of increasing the yield of the oil and gas well is achieved.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (8)
1. The multi-point directional jet drilling tool is characterized by comprising a plurality of stages of directional jet sections, wherein each directional jet section comprises a shell assembly and a guider assembly, and the shell assemblies are sequentially communicated along the axial direction;
a first central hole is formed in the shell assembly in a penetrating mode along the axial direction, a spraying window is formed in the side wall of the shell assembly, an oblique device is arranged at the spraying window and can be fixed in the first central hole or slide along the axial direction of the first central hole, a second central hole is formed in the oblique device in a penetrating mode along the axial direction, and the inner diameter size of the second central hole of the multi-stage directional spraying joint is increased from bottom to top step by step;
the guider assembly can push the corresponding whipstock to axially slide; the guider assembly comprises a guider body, a liquid circulation channel and a spraying pore channel are arranged on the guider body in an isolated mode, two ends of the liquid circulation channel can be communicated with the first central hole, and the first end of the liquid circulation channel can be closed by ball throwing; the injection pore channel can be communicated with the corresponding injection window to directionally inject; a spray head is arranged in the spray hole in a sliding mode, a high-pressure pipe penetrates through the spray hole in a sealing and sliding mode, the first end of the spray head is communicated with the first end of the high-pressure pipe, the second end of the high-pressure pipe is connected with a steel wire rope and can be communicated with the first center hole, and the spray head can drive the high-pressure pipe to drill in the stratum under the action of hydraulic force to communicate with the around-well reservoir body; the guide assemblies of all levels of directional spraying sections can be respectively arranged corresponding to the whipstocks, and the outer diameter sizes of the guide assemblies of the multi-level directional spraying sections are gradually increased from bottom to top;
the guider body comprises a first body section, a second body section and a third body section which are sequentially arranged, a first pore passage is formed in the first body section, a second pore passage is formed in the second body section, the high-pressure pipe penetrates through the first pore passage in a sealing mode, and the first pore passage is communicated with the second pore passage to form the jet pore passage;
the outer wall of the first body section can be in sealing abutting joint with the inner wall of the shell assembly, and a third duct isolated from the first duct is arranged in the first body section; the outer wall of the third body section can be in sealing abutting joint with the inner wall of the shell assembly, and a third central hole is axially arranged on the third body section in a through mode; the outer diameter of the second body section is smaller than the inner diameter of the shell assembly, an annular gap is formed between the outer wall of the second body section and the inner wall of the shell assembly, a fourth pore passage capable of communicating the third pore passage with the annular gap is arranged on the second body section, and a fifth pore passage capable of communicating the annular gap with the third central hole is also arranged on the second body section; the third pore canal, the fourth pore canal, the annular gap, the fifth pore canal and the third central hole are communicated to form the liquid circulation channel.
2. The multi-point directional jet drilling tool of claim 1, wherein the first end of the third body segment defines a first helical arcuate surface and the first end of the whipstock defines a second helical arcuate surface, the first helical arcuate surface being engageable with the second helical arcuate surface to directionally communicate the jet orifice with the corresponding jet window.
3. The multi-point directional jet drilling tool of claim 1, wherein the third port inner seal is provided with a composite seal structure through which the high pressure tube seal passes.
4. The multi-point directional jet drilling tool of claim 1, wherein a first step is disposed in the second bore for capturing and limiting the nozzle.
5. The multi-point directional jet drilling tool of claim 1, wherein the high pressure pipe connects the wireline through a filter joint.
6. The multi-point directional jet drilling tool of claim 1, wherein the whipstock is fixedly attached to the housing assembly by shear pins.
7. The tool of claim 1, wherein a second step is provided on the inner wall of the housing assembly, the second step for axially retaining the whipstock.
8. A method of using a multi-point directional jet drilling tool as claimed in any one of claims 1 to 7, comprising the steps of:
step a, determining the grade number of a directional injection joint according to the distribution condition of a stratum reservoir body, connecting a shell assembly requiring the grade number on an operation pipe column, and fixedly connecting each whipstock to the shell assembly through a shearing pin; each shell assembly is lowered into an operation position along with an operation pipe column;
b, inserting the guider assembly at the lowest stage into the shell assembly at the lowest stage through a steel wire rope;
c, when the guider assembly is lowered to the position of the whipstock in the shell assembly, putting a pressure-building ball into the operation tubular column to plug a liquid circulation channel on the guider body, pumping liquid into the operation tubular column to generate axial throttling liquid pressure on the guider assembly, and matching the guider assembly and the whipstock in place;
d, continuing pumping and suppressing pressure in the operation pipe column, feeding the steel wire rope downwards for a certain distance, and enabling the guider assembly to drive the whipstock to move downwards under the action of hydraulic thrust when the pressure reaches a certain value until the injection pore channel is communicated with the injection window;
e, continuously pumping in the operation pipe column, forming high-speed jet flow at the spray head to break rock, slowly lowering the steel wire rope, driving the high-pressure pipe to drill in the stratum under the action of traction force generated by hydraulic force by the spray head, and continuously drilling a reservoir around the dredging well of the ditch;
and f, repeating the steps b to e to finish the multi-stage directional jet drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615136.8A CN114876370B (en) | 2022-06-01 | 2022-06-01 | Multi-point directional jet drilling tool and method of use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615136.8A CN114876370B (en) | 2022-06-01 | 2022-06-01 | Multi-point directional jet drilling tool and method of use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114876370A CN114876370A (en) | 2022-08-09 |
| CN114876370B true CN114876370B (en) | 2023-03-28 |
Family
ID=82679888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210615136.8A Active CN114876370B (en) | 2022-06-01 | 2022-06-01 | Multi-point directional jet drilling tool and method of use thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114876370B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999989A (en) * | 2006-01-13 | 2007-07-18 | 中国石油大学(北京) | High pressure water jet-flow deep penetrating perforating and its auxiliary crushing method and apparatus |
| CN102536186A (en) * | 2012-02-08 | 2012-07-04 | 中国海洋石油总公司 | Method for fracturing composite pipe column through hydraulic jetting in segmented mode |
| CN102979497A (en) * | 2012-11-20 | 2013-03-20 | 中国石油大学(北京) | Device and method for immovable-string type packer-free sliding-sleeve hydraulic-jet pulsed acid fracturing |
| CN103266875A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing operation method of multistage hydraulic jet staged fracturing tubular column |
| CN106869893A (en) * | 2017-03-16 | 2017-06-20 | 中国石油集团渤海钻探工程有限公司 | Perforation/pressure break/packing integrated apparatus and its multistage fracturing process pipe string |
| CN107035352A (en) * | 2017-06-08 | 2017-08-11 | 中国石油大学(北京) | A kind of water-jet infinite stages fracturing device and fracturing process |
| CN109281615A (en) * | 2018-11-19 | 2019-01-29 | 中国石油集团渤海钻探工程有限公司 | The radial hydraulic perforation tubing string of preset tool |
| CN111088992A (en) * | 2020-01-13 | 2020-05-01 | 煤科集团沈阳研究院有限公司 | Ball throwing type high-pressure hydraulic drilling and cutting integrated penetration increasing device and penetration increasing method |
| CN111206911A (en) * | 2020-02-14 | 2020-05-29 | 中国石油大学(北京) | Hydraulic transmission hydraulic jet infinite-stage fracturing device |
| CN111520112A (en) * | 2020-05-27 | 2020-08-11 | 中国石油天然气集团有限公司 | Step-by-step directional hydraulic jet separate layer fracturing string |
| CN114183076A (en) * | 2020-09-15 | 2022-03-15 | 中国石油天然气股份有限公司 | Hydraulic jet drilling pipe column and hydraulic jet drilling method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19729809C1 (en) * | 1997-07-11 | 1998-12-17 | Flowtex Technologie Import Von | Device and method for producing borehole branches |
| MY132567A (en) * | 2000-02-15 | 2007-10-31 | Exxonmobil Upstream Res Co | Method and apparatus for stimulation of multiple formation intervals |
| US8167060B2 (en) * | 2007-10-22 | 2012-05-01 | Charles Brunet | Apparatus and method for conveyance and control of a high pressure hose in jet drilling operations |
| US8196680B2 (en) * | 2009-02-04 | 2012-06-12 | Buckman Jet Drilling | Perforating and jet drilling method and apparatus |
| US10309205B2 (en) * | 2011-08-05 | 2019-06-04 | Coiled Tubing Specialties, Llc | Method of forming lateral boreholes from a parent wellbore |
| CN102418478B (en) * | 2011-12-29 | 2014-02-05 | 中国海洋石油总公司 | Operation method of hollow guider by using multilateral well windowing sidetrack drilling |
| US20140096966A1 (en) * | 2012-10-08 | 2014-04-10 | Mr. Gary Freitag | Method and Apparatus for Completion of Heavy Oil Unconsolidated Sand Reservoirs |
| CN105201476B (en) * | 2014-06-16 | 2018-03-02 | 中国石油化工股份有限公司 | A kind of sleeve type hydraulic jeting device and the tubing string including device |
| US10683740B2 (en) * | 2015-02-24 | 2020-06-16 | Coiled Tubing Specialties, Llc | Method of avoiding frac hits during formation stimulation |
| RU2747033C1 (en) * | 2020-11-09 | 2021-04-23 | Тимур Андреевич Постнов | Method of well preparation for hydraulic fracturing of reservoir in oil and gas wells |
-
2022
- 2022-06-01 CN CN202210615136.8A patent/CN114876370B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999989A (en) * | 2006-01-13 | 2007-07-18 | 中国石油大学(北京) | High pressure water jet-flow deep penetrating perforating and its auxiliary crushing method and apparatus |
| CN102536186A (en) * | 2012-02-08 | 2012-07-04 | 中国海洋石油总公司 | Method for fracturing composite pipe column through hydraulic jetting in segmented mode |
| CN102979497A (en) * | 2012-11-20 | 2013-03-20 | 中国石油大学(北京) | Device and method for immovable-string type packer-free sliding-sleeve hydraulic-jet pulsed acid fracturing |
| CN103266875A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing operation method of multistage hydraulic jet staged fracturing tubular column |
| CN106869893A (en) * | 2017-03-16 | 2017-06-20 | 中国石油集团渤海钻探工程有限公司 | Perforation/pressure break/packing integrated apparatus and its multistage fracturing process pipe string |
| CN107035352A (en) * | 2017-06-08 | 2017-08-11 | 中国石油大学(北京) | A kind of water-jet infinite stages fracturing device and fracturing process |
| CN109281615A (en) * | 2018-11-19 | 2019-01-29 | 中国石油集团渤海钻探工程有限公司 | The radial hydraulic perforation tubing string of preset tool |
| CN111088992A (en) * | 2020-01-13 | 2020-05-01 | 煤科集团沈阳研究院有限公司 | Ball throwing type high-pressure hydraulic drilling and cutting integrated penetration increasing device and penetration increasing method |
| CN111206911A (en) * | 2020-02-14 | 2020-05-29 | 中国石油大学(北京) | Hydraulic transmission hydraulic jet infinite-stage fracturing device |
| CN111520112A (en) * | 2020-05-27 | 2020-08-11 | 中国石油天然气集团有限公司 | Step-by-step directional hydraulic jet separate layer fracturing string |
| CN114183076A (en) * | 2020-09-15 | 2022-03-15 | 中国石油天然气股份有限公司 | Hydraulic jet drilling pipe column and hydraulic jet drilling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114876370A (en) | 2022-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104196464B (en) | Tubing string string and bridging plug set the method made with abrasive perforating connection | |
| CA2225571C (en) | Subterranean formation fracturing methods | |
| CN103266875B (en) | A kind of multi-stage water power sprays the fracture job method of fracturing strings | |
| US20090288884A1 (en) | Method and apparatus for high pressure radial pulsed jetting of lateral passages from vertical to horizontal wellbores | |
| CN106837172B (en) | A kind of radial well solves the boring method of thin interbed | |
| CN108952580B (en) | Drilling pipe recoverable abrasive jet flow fishbone spur well drilling and completion device | |
| CN107489405B (en) | Method for dragging sand-blasting perforation and annular sand-filling staged fracturing by continuous oil pipe | |
| CN103266873A (en) | Connecting structure of multilevel hydraulic spraying segmentation fracturing tubular column | |
| CN103266876B (en) | Multi-stage water power sprays the fracture job method of fracturing strings | |
| CN107461186B (en) | Branch well reservoir transformation device and transformation method | |
| US20050061518A1 (en) | Apparatus and method for installing casing in a borehole | |
| CN106703720A (en) | Well drilling device with steel wire transmission function | |
| CN105888639A (en) | Feeding-controlling full-bore sliding sleeve sectional fracturing tube column | |
| CN112368459A (en) | Method and apparatus for stuck drill mitigation | |
| CN106837171B (en) | A kind of compact reservoir radial direction boring means external member | |
| CN104265357B (en) | Anti-burst method is taken out in a kind of strong prominent coal seam in advance | |
| US5632604A (en) | Down hole pressure pump | |
| CN115324550A (en) | Hydraulic coiled tubing dragging fracturing tool and technological method | |
| CN114876370B (en) | Multi-point directional jet drilling tool and method of use thereof | |
| US10662744B2 (en) | Lateral drilling system | |
| CN109281615B (en) | Radial hydraulic jet perforation pipe column with preset tool | |
| CN115822530A (en) | Long horizontal section under-pressure drill rod transmission well-flushing and perforation integrated tool and method | |
| CN204960806U (en) | Coiled tubing radially creeps into injection drill bit | |
| CN114183076B (en) | Hydraulic jet drilling pipe column and hydraulic jet drilling method | |
| CN211144396U (en) | Radial hydraulic jet perforation pipe column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |