CN103628825B - The pressure-bearing joint measured for the mud resistivity of induction logging instrument - Google Patents
The pressure-bearing joint measured for the mud resistivity of induction logging instrument Download PDFInfo
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- CN103628825B CN103628825B CN201210304278.9A CN201210304278A CN103628825B CN 103628825 B CN103628825 B CN 103628825B CN 201210304278 A CN201210304278 A CN 201210304278A CN 103628825 B CN103628825 B CN 103628825B
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Abstract
The present invention relates to the pressure-bearing joint measured for the mud resistivity of induction logging instrument, this pressure-bearing joint includes: pressure-bearing joint body, and its one end connects electronic circuit iron pipe and has a cavity and other end connection probe iron pipe；First multicore sealing-plug, is arranged in the first path between electronic circuit iron pipe and probe iron pipe；For measuring the mud resistivity pole plate of mud resistivity, being arranged in the first sealing hole, first seals hole is extended internally from the outer surface of pressure-bearing joint body and is sealed with pressure-bearing joint body by the second sealing ring；For the plug to alternate path oiling, being arranged in the second sealing hole, described second seals hole extends internally from the outer surface of pressure-bearing joint body, connects with described first sealing hole and the described other end via alternate path；And the second multicore sealing-plug, its one end connects with alternate path and the other end connects with cavity and is sealed with pressure-bearing joint body by the 4th sealing ring.
Description
Technical field
The present invention relates to a kind of pressure-bearing joint, relate more specifically in oil well logging instrument for connecting the pressure-bearing joint with mud resistivity measurement function of induction logging instrument High Temperature High Pressure probe section and electric wire section.
Background technology
In oil field prospecting with development process, one of well logging important means determining that and evaluating oil, gas-bearing formation, is also the important means solving Geological Problems in a series.It directly can provide every data and data for petroleum geology and engineers and technicians.As required, various logger such as acoustic logging instrument, induction log tool and dipmeter tool etc. and various auxiliary well logging pipe nipple it are developed to obtain petrophysical parameter and the Engineering technical parameters on various stratum.These loggers are owing to being operated under the adverse circumstances of high temperature, high pressure (such as, in the down-hole degree of depth to 7000
During m, temperature is up to 175 DEG C, and pressure reaches 140 MPa) and must have performance high temperature resistant, high voltage bearing.
Array induction logging tool is to grow up on the basis of common induction logging instrument, and this instrument has certain radial direction detectivity.Instrument uses the coil array of a series of different coil spacing to measure same stratum, is then obtained the formation conductivity of different radial depth of investigetion by hardware or software focusing, thus efficiently identifies oil-gas Layer.
Existing logger mostly uses resistant to elevated temperatures components and parts or material to realize the resistance to elevated temperatures of instrument, and the most useful thermos flask realizes the resistance to elevated temperatures of instrument；Meanwhile, logger (the in particular High Temperature High Pressure probe section) high pressure to be born in down-hole, in order to avoid instrument damages because of high pressure, in the place of logger insufficient strength, it is necessary to high pressure resistant design.In the case of selecting the material that intensity is high still can not meet requirement, the internal and external pressure balance keeping instrument is the effective ways preventing instrument to be subject to crushing.At present, the method for balance pressure is mainly notes silicone oil in instrument, by keeping the internal and external pressure balance of instrument to realize the high voltage performance of instrument.
Probe signal is acquired and transmits by electric wire section, is built-in with circuit board and processes with the signal to collection, and wherein the ambient pressure in electric wire section is 1 atmospheric pressure.Additionally, also need to mud resistivity is measured in well logging.Owing to mud resistivity measurement apparatus is usually nonmetal basal body component, for making it normally work in high temperature and high pressure environment, also need to carry out pressure balance.
Therefore, for guaranteeing induction logging instrument reliably working under above-mentioned high temperature and high pressure environment, a kind of mud resistivity is needed to measure pressure-bearing joint, this mud resistivity is measured pressure-bearing joint and is connected High Temperature High Pressure probe section and electronic circuit normal pressure section, realize the isolation of high-low pressure, realize the reliable measurements of mud resistivity simultaneously.
Summary of the invention
It is an object of the invention to provide in a kind of oil well logging instrument for connecting the mud resistivity measurement pressure-bearing joint in induction logging instrument High Temperature High Pressure probe section and electric wire section.
Measure under the technical conditions premise that pressure-bearing joint uses meeting mud resistivity, the present invention uses novel frame for movement to provide the pressure-bearing joint with mud resistivity measurement function, solve mud resistivity and measure the problem such as pressure-bearing joint processed complex, production cycle length, improve yield rate and the reliability of parts, reduce production cost.
According to an aspect of the present invention, the pressure-bearing joint that a kind of mud resistivity for induction logging instrument is measured is provided, this pressure-bearing joint includes: pressure-bearing joint body, and one end of described pressure-bearing joint body connects electronic circuit iron pipe and has a cavity and other end connection probe iron pipe；First multicore sealing-plug, being arranged in the first path between described electronic circuit iron pipe and described probe iron pipe and sealed to block described first path with pressure-bearing joint body by the first sealing ring, the electronic circuit in described electronic circuit iron pipe is connected with the probe in described probe iron pipe via described first multicore sealing-plug；For measuring the mud resistivity pole plate of mud resistivity, being arranged in the first sealing hole, described first seals hole is extended internally from the outer surface of pressure-bearing joint body and is sealed with pressure-bearing joint body by the second sealing ring；For the plug to described alternate path oiling, it is arranged in the second sealing hole, described second seals hole extends internally from the outer surface of pressure-bearing joint body, connect with described first sealing hole and the described other end via the alternate path different from the first path, and sealed with pressure-bearing joint body by the 3rd sealing ring；And the second multicore sealing-plug, one end of described second multicore sealing-plug connects with described alternate path and the other end connects with described cavity and is sealed with pressure-bearing joint body by the 4th sealing ring, and the holding wire of described mud resistivity pole plate is connected to, via described second multicore sealing-plug, the common circuit board that described electronic circuit is connected to.
According to a further aspect in the invention, described second multicore sealing-plug is screwed in the 3rd sealing hole of pressure-bearing joint body by pressure-bearing plug, and the described 3rd seals hole connects with described alternate path and described cavity.
According to a further aspect in the invention, described first multicore sealing-plug lies in the 4th sealing hole in described first path, and described first path extends along the axis direction of pressure-bearing joint body.
According to a further aspect in the invention, the described other end of described pressure-bearing joint body has an internal thread hole, and described internal thread hole has the half slot axially extended.
According to a further aspect in the invention, the described other end of described pressure-bearing joint body is provided with the multiple 5th and seals hole, the plurality of 5th seals hole is connected with described cavity by corresponding path, and the 3rd multicore sealing-plug is arranged on the plurality of 5th and seals in hole and sealed with pressure-bearing joint body by the 5th sealing ring.
According to a further aspect in the invention, receive holding wire and be connected to described circuit board via described 3rd multicore sealing-plug by corresponding path, and launch holding wire and be connected to described probe via the first multicore sealing-plug by described first path.
According to a further aspect in the invention, described electronic circuit includes launching at least one in holding wire and reception holding wire.
According to a further aspect in the invention, pressure-bearing joint farther includes: electronic circuit wire casing, being embedded in the described cavity of described pressure-bearing joint body, described electronic circuit iron pipe passes from the centre bore of described electronic circuit wire casing and is inserted into one end of pressure-bearing joint body and fastens.
According to a further aspect in the invention, pressure-bearing joint farther includes: electronic circuit wire casing, it is embedded in the described cavity of described pressure-bearing joint body, described electronic circuit iron pipe passes from the centre bore of described electronic circuit wire casing, and described electronic circuit wire casing has multiple groove spaced apart from each other to accommodate described reception holding wire and to have an inclined hole to accommodate the holding wire of described mud resistivity pole plate.
According to a further aspect in the invention, the plurality of groove is multiple rectangular channels of circle distribution, and the entrance corner angle of described rectangular channel are by abundant cavetto.
According to a further aspect in the invention, pressure-bearing joint farther includes: half swivel nut, is enclosed within the outer surface of pressure-bearing joint body.
According to a further aspect in the invention, described electronic circuit iron pipe is made up of high magnetic permeability mild steel.
According to a further aspect in the invention, described pressure-bearing plug has external screw thread to coordinate fastening with pressure-bearing joint body.
According to a further aspect in the invention, the matrix of described mud resistivity pole plate is high-temperature insulation material, mud resistivity pole plate has the measurement electrode of concentric ring, cone groove is had outside described measurement electrode, described cone groove is positioned on the outer surface of pressure-bearing joint body, the cone angle of described cone groove is obtuse angle, and the outermost electrodes of described mud resistivity pole plate has screw thread to coordinate fastening with pressure-bearing joint body.
According to a further aspect in the invention, described probe iron pipe is made up of high magnetic permeability mild steel
According to a further aspect in the invention, pressure-bearing joint farther includes: relief valve seat, is connected and equipped with sealing ring with pressure-bearing joint body by screw thread, at described relief valve seat built with overflow valve.
According to a further aspect in the invention, pressure-bearing joint farther includes: one-way valve seat, connected and equipped with sealing ring with pressure-bearing joint body by screw thread, at described one-way valve seat built with contact pin type check valve, described one-way valve seat circumferentially has multiple hole, the outer surface of the plurality of hole connection pressure-bearing joint body and described alternate path.
According to a further aspect in the invention, the outer surface at the two ends of described pressure-bearing joint body is respectively arranged with at least one place's groove, can be provided with sealing ring on described groove.
According to a further aspect in the invention, a kind of induction logging instrument is provided, this induction logging instrument includes electric wire section, pressure-bearing joint as above and probe section, wherein said pressure-bearing joint connects described electric wire section and described probe section, equipped with for power supply, transmitting and the Acquisition Circuit of induction logging instrument and communicating circuit in electric wire section, and equipped with the sensor for induction logging instrument in probe section.
By the detailed description of the invention read in conjunction with the accompanying drawings below, the features and advantages of the present invention be may be better understood.
Accompanying drawing explanation
Embodiments of the invention are explained now with reference to accompanying drawing.It should be noted that, these embodiments are used for illustrating ultimate principle so that only illustrate to understand ultimate principle and those required features.Accompanying drawing is not in scale.It addition, similar label represents similar features the most in the whole text.
Fig. 1 is that the mud resistivity of the present invention measures pressure-bearing joint annexation schematic diagram in induction logging instrument.
Fig. 2 A is the top view of the mud resistivity measurement pressure-bearing joint of the present invention.
Fig. 2 B is the sectional view of the cutting mud resistivity pole plate of the mud resistivity measurement pressure-bearing joint of the present invention.
Fig. 2 C is the sectional view of the cutting multicore sealing-plug of the mud resistivity measurement pressure-bearing joint of the present invention.
Fig. 3 A is the right end view of the mud resistivity measurement pressure-bearing joint of the present invention.
Fig. 3 B is that the mud resistivity of the present invention measures the relief valve seat of pressure-bearing joint, repairing plug and the radial cross-section of one-way valve seat.
Fig. 4 is the axonometric chart of the pressure-bearing joint body in the mud resistivity measurement pressure-bearing joint of the present invention.
Fig. 5 is the axonometric chart of the mud resistivity pole plate in the mud resistivity measurement pressure-bearing joint of the present invention.
Fig. 6 A and 6B is axonometric chart and the sectional view of the electronic circuit wire casing in the mud resistivity measurement pressure-bearing joint of the present invention respectively.
Fig. 7 A and 7B is top view and the sectional view of the relief valve seat in the mud resistivity measurement pressure-bearing joint of the present invention respectively.
Fig. 8 A and 8B is top view and the sectional view of the one-way valve seat in the mud resistivity measurement pressure-bearing joint of the present invention respectively.
Detailed description of the invention
The following specifically describes and relate to accompanying drawing, these accompanying drawings show detail and the embodiment that can implement the present invention by diagramatic way.Fully specifically describe these embodiments to enable those skilled in the art to implement the present invention.Other embodiments can be utilized and structure, logic and electricity change can be carried out without deviating from the scope of the present invention.Various embodiments may not mutual exclusion because some embodiments can with one or more other embodiments combine to form new embodiment.
In the following detailed description with reference to the accompanying drawing of the part forming this detailed description, by the way of explanation, it is shown in which to put into practice the specific embodiment of the present invention in the drawing.In this respect, the orientation with reference to described accompanying drawing employs such as the direction term at " top ", " end ", "front", "rear", " first ", " tail " etc..Owing to the assembly of embodiment can be positioned in several different orientation, the most described direction term is used for descriptive purpose and limits by no means.It being understood that and can utilize other embodiments in the case of without departing substantially from the scope of the present invention and the change of structure or logic can be made.Therefore, detailed description below is not considered as restrictive, sense, and it is intended that the scope of the present invention be defined by the claims appended hereto.
It being understood that the feature of each exemplary embodiment the most as described herein can be with combination with one another unless concrete Stated otherwise.It should be understood that embodiment is only in order to illustrative not limiting technical scheme.Although the present invention being described in detail with reference to embodiment, but it will be understood by those within the art that: still the present invention can be modified or equivalent, without departing from the spirit and scope of the present invention, these amendment or equivalents that claims are intended to fall in spirit and scope of the invention.
It follows that explain embodiments of the invention with specific reference to accompanying drawing.
As it is shown in figure 1, induction logging instrument is typically by electronic cartridge 21, front pipe nipple 22 of putting, pressure-bearing joint 23 and probe nipple 24 form.Electronic cartridge 21 and front power supply, transmitting and Acquisition Circuit and the communicating circuit put in pipe nipple 22 equipped with logger.Equipped with the sensor of logger in pressure-bearing joint 23.Electronic cartridge 21, front put pipe nipple 22 and pressure-bearing joint 23 for example, metal material is made, the ambient pressure of the outside 140Mpa of carrying；And the shell of probe nipple 24 for example, nonmetallic materials are made, inside is filled by silicone oil, by device, the ambient pressure of outside 140Mpa is guided to silicone oil, it is ensured that silicone oil is identical with the ambient pressure of outside 140Mpa.
As shown in Fig. 2 A to 2C, this pressure-bearing joint 23 includes pressure-bearing joint body 13, and one end of described pressure-bearing joint body 13 connects electronic circuit iron pipe 1 and has a cavity and other end connection probe iron pipe 11.This pressure-bearing joint 23 also includes: multicore sealing-plug 9, being arranged in the first path between described electronic circuit iron pipe 1 and described probe iron pipe 11 and seal to block described first path by sealing ring with pressure-bearing joint body 13, the electronic circuit in described electronic circuit iron pipe 1 is connected with the probe in described probe iron pipe 11 via multicore sealing-plug 9.
This pressure-bearing joint 23 farther includes: for measuring the mud resistivity pole plate 7 of mud resistivity, being arranged in sealing hole, described sealing hole is extended from the outer surface of pressure-bearing joint body 13 inwardly (such as radial direction or incline direction) and is sealed with pressure-bearing joint body 13 by sealing ring；For the plug 8 to described alternate path oiling, it is arranged in the second sealing hole, described second seals hole extends internally from the outer surface of pressure-bearing joint body 13, connect with sealing hole and the described other end 11 via the alternate path different from the first path, and sealed with pressure-bearing joint body 13 by sealing ring；And multicore sealing-plug 5, one end of described multicore sealing-plug 5 connects with described alternate path and the other end connects with described cavity and is sealed with pressure-bearing joint body 13 by sealing ring, and the holding wire of described mud resistivity pole plate 7 is connected to, via multicore sealing-plug 5, the common circuit board that described electronic circuit is connected to.First and second paths such as can connect one end and the other end of pressure-bearing joint body 13, is positioned in pressure-bearing joint body 13, and such as can axially extend, but is not limited to this.
Pressure-bearing joint body 13 material is high magnetic permeability high-strength material, such as high magnetic permeability high strength precipitation-hardening stainless steel 17-4PH.Use this kind of material that on the one hand multiple signals can carry out electromagnetic shielding effectively, on the other hand can be used to carry the ambient pressure of 140Mpa.The left end of described pressure-bearing joint body 13 is the atmospheric air chamber accommodating electronic circuit wire casing, and right-hand member is hydraulic cavities, wherein filling silicon oil.Silicone oil pressure and mud pressure balance, maximum up to 140Mpa.
As shown in Figure 2 A, pressure-bearing joint body 13 two ends outer surface is respectively arranged with groove at two, and described groove is seal groove, is mounted on sealing ring and seals, and the most left sealing ring is with electronic circuit body seal, and right sealing ring is with nonmetallic materials body seal.
As shown in Figure 2 B, the left end of the most described pressure-bearing joint body 13 has a cavity that can accommodate electronic circuit wire casing 2, and right-hand member also has an internal thread hole that can connect instrument probe pipe nipple 24.Have half slot vertically on described internal thread hole, this half slot be oil circuit with guarantee silicone oil in internal thread hole unimpeded.Being distributed multiple (such as 12) on the right-hand member end face of pressure-bearing joint body 13 and seal hole, described sealing hole is connected with the cavity of left end by corresponding through hole.The center of pressure-bearing joint body 13 right-hand member has one to seal hole, and described sealing hole is connected with the cavity of left end by through hole.The reception test holding wire of induction logging instrument is guided on electronic circuit wire casing 2 by above-mentioned corresponding hole, and launches holding wire and guided in electronic circuit iron pipe 1 by the hole of center.It is only a preferred example it should be noted, however, that above.Receive test holding wire and transmitting holding wire can also be positioned in electronic circuit iron pipe 1 simultaneously.
Pressure-bearing joint body 13 has sealing hole, many places, all chamferings in porch, described sealing hole, and the interior outside cavetto of chamfering is so that the smooth installation of sealing-plug 5,9,12, as explained further below.
As shown in Figure 2 B, electronic circuit iron pipe 1 is connected with pressure-bearing joint body 13 by screw thread, and described electronic circuit iron pipe 1 is positioned in the central through hole of electronic circuit wire casing 2.Described electronic circuit iron pipe is made up of high magnetic permeability mild steel, can eliminate the interference launching the signal docking collection of letters number.When induction logging instrument works, more than intensity is received signal strength 1000 times of transmitting signal, the effect of electronic circuit iron pipe 1 is to launching holding wire one good electromagnetism passage of offer to reduce the impact of the docking collection of letters number.
Electronic circuit wire casing 2 surface perimeter distribution multiple (such as 12) rectangular channel in Fig. 2 B.Installing various holding wire for convenience, the right hand inlet port corner angle of described 12 rectangular channels are by abundant cavetto, so that it is guaranteed that do not injure holding wire.Described electronic circuit wire casing 2 has centre bore, electronic circuit iron pipe 1 to extend there through and be fixed in pressure-bearing joint body 13.Described electronic circuit wire casing 2 has an inclined hole 62, and the holding wire of mud resistivity pole plate 7 guides circuit board via multicore sealing-plug 5 into by this inclined hole.
Half swivel nut 3 is semi-loop, can take apart on the external cylindrical surface 42 being enclosed within pressure-bearing joint body 13 afterwards, it is achieved with the linkage function of electronic circuit shell.
Preferably, pressure-bearing plug 4 has external screw thread, and it is coaxial that the endoporus of described pressure-bearing plug 4 exports circle with the inclined hole in electronic circuit wire casing 2.The purpose of pressure-bearing plug is to carry the 140Mpa pressure on multicore sealing-plug 5 end face.
In Fig. 2 B, the insulant of mud resistivity pole plate 7 matrix is high-temperature resistance plastice.Mud resistivity pole plate 7 is for having measurement electrode concentric ring, and these concentric rings realize the measurement to mud resistivity.Mud resistivity pole plate 7, equipped with rubber seal, seals with the hole of pressure-bearing joint body 13.The outermost electrodes of mud resistivity pole plate 7 has screw thread, inner thread sleeve can be used to be enclosed within described screw thread install, dismantle pole plate.Having cone groove, described cone groove to be positioned on the outer surface of pressure-bearing joint body (13) outside the measurement electrode of mud resistivity pole plate 7, the cone angle of described cone groove is obtuse angle.The outer porose back-up ring 6 of mud resistivity pole plate 7, limits it and moves.
Pressure-bearing joint body 13 in Fig. 2 B is provided with oiling plug 8, has external screw thread, and described oiling plug 8 is equipped with a High Temperature High Pressure rubber seal.The installing hole of described oiling plug 8 connects with the cavity of mud resistivity pole plate 7 installing hole, and the installing hole of described oiling plug 8 connects with the right side of pressure-bearing joint body 13.By this passage, the cavity within the cavity of connection mud resistivity pole plate and probe nipple 24.
In Fig. 2 B, multicore sealing-plug 9 is positioned at the sealing hole of pressure-bearing joint body 13, described multicore sealing-plug 9 is equipped with two High Temperature High Pressure rubber seal, the axle center of described multicore sealing-plug 9 is with pressure-bearing joint body 13, electronic circuit iron pipe 1, probe iron pipe 11 and the axis coinciding of probe mandrel 13.This sealing-plug is used for connecting the transmitting holding wire of instrument.
Probe iron pipe 11 is connected with the screwed hole end face of pressure-bearing joint body 13 by screw.Similarly, described probe iron pipe is made up of high magnetic permeability mild steel, can eliminate the interference launching the signal docking collection of letters number.
As shown in Figure 3A, multicore sealing-plug 12 for example, 12 in Fig. 2 C, it is positioned at the sealing hole of pressure-bearing joint body 13, these sealing-plugs are used for connecting the reception holding wire of instrument.Described multicore sealing-plug 12 has through hole elongated at 12, described through hole to extend in pressure-bearing joint body 13 left end cavity equipped with two High Temperature High Pressure rubber seal, described multicore sealing-plug 12 left end.Described elongated hole is used for accommodating multipath reception holding wire.
Relief valve seat 14 in Fig. 3 B is connected with pressure-bearing joint body 13 by screw thread, and described relief valve seat 14 is equipped with 1 High Temperature High Pressure rubber seal, and described relief valve seat 14 is built with contact pin type overflow valve.During instrument internal hypertonia, overflow valve overflow, in case instrument internal hypertonia.
In Fig. 3 B, one-way valve seat 16 is connected with pressure-bearing joint body 13 by screw thread, described one-way valve seat 16 is equipped with 1 High Temperature High Pressure rubber seal, described one-way valve seat 16 is built with contact pin type check valve, described one-way valve seat 16 circumference has four circular holes, the outer surface of described four circular holes connection pressure-bearing joint body 13 and its inner chamber.Repairing plug 15 there is external screw thread, described repairing plug is equipped with a High Temperature High Pressure rubber seal, and the installing hole of described repairing plug 15 connects with multiple circular holes of one-way valve seat 16.When instrument loses oil, can removal repairing plug 15, use handlance by the contact pin type check valve in one-way valve seat 16 to instrument internal repairing.
The sealing hole, many places of pressure-bearing joint body 13 is connected by the half slot on the oilhole of diameter 5mm and pressure-bearing joint body 13 internal thread hole with the right side of pressure-bearing joint body 13, and described sealing hole such as includes the installing hole of multicore sealing-plug 5,9,12, the installing hole of mud resistivity pole plate 7, the installing hole of oiling plug 8, the installing hole of relief valve seat 14, the installing hole of repairing plug 15, the installing hole of one-way valve seat 16.The UNICOM of oil circuit is realized by this some holes.
Pressure-bearing joint body 13,41 as shown in Figure 4 be at two in seal groove one at, 45 be at two in seal groove one at.42 install the external cylindrical surface of half swivel nut 3 for pressure-bearing joint body 13.Groove 43 is the cone groove measuring electrode of mud resistivity pole plate 7.Seal the sealing hole that hole 44 is mud resistivity pole plate 7.Half slot 46 is the half slot on pressure-bearing joint body 13 internal thread hole.Screw thread 48 is the internal thread hole connecting instrument probe pipe nipple 24.Hole 47 is the sealing hole installing multicore sealing-plug 12.
Mud resistivity pole plate 7 as shown in Figure 5, insulating body 52 is high-temperature resistance plastice, and wherein 53,54,55,56 is electrode concentric ring, and 53,56 is emission electrode ring, and 54,55 for receiving electrode retaining collar.Groove 51 is the seal groove of pole plate.
Electronic circuit wire casing 2 as shown in Figure 6 A and 6B, groove 64 is multiple (the such as 12) rectangular channel in circumferential surface distribution.The right hand inlet port corner angle of described 12 rectangular channels are by abundant cavetto, and shown entrance 63 is an example.Electronic circuit wire casing 2 has centre bore 61, electronic circuit iron pipe 1 to extend there through.The holding wire of multicore sealing-plug 5 guides circuit board into by inclined hole 62.
As shown in figs. 7 a-b, relief valve seat 14 has external screw thread 72, and external screw thread connects with pressure-bearing joint body 13, and described relief valve seat 14 has groove 73 and equipped with rubber seal.The hole 71 of described relief valve seat 14 is built with contact pin type overflow valve.The effect of overflow valve is to maintain valve inlet pressure to be bordering on constant, and overflow valve is the pressure-control valve that fluid unnecessary in system is refluxed by this valve.For induction logging instrument, its role is to prevent the silicone oil hypertonia of probe nipple 24.
As shown in figs. 8 a and 8b, one-way valve seat 16 has external screw thread 82, and external screw thread connects with pressure-bearing joint body 13, and described one-way valve seat 16 has groove 84 and equipped with rubber seal.The hole 81 of described one-way valve seat 16 is built with contact pin type check valve.Described one-way valve seat 16 circumference has multiple hole 83, the outer surface of the plurality of hole connection pressure-bearing joint body 13 and its inner chamber.When instrument loses oil, after silicone oil is by the multiple holes 83 in one-way valve seat 16, by contact pin type check valve to instrument internal repairing.Check valve, also known as check-valves or non-return valve, prevents oil stream reverse flow in hydraulic system.For induction logging instrument, its role is to prevent the silicone oil of probe nipple 24 from flowing out.
According to a preferred embodiment of the invention, electronic circuit iron pipe 1 and probe iron pipe 11 connect with the hole in two end faces of pressure-bearing joint body 13.Electronic circuit wire casing 2 is embedded in the inside of pressure-bearing joint body 13, and electronic circuit iron pipe 1 passes from the center of electronic circuit wire casing 2.Multicore sealing-plug 5 is sealed with pressure-bearing joint body 13 by sealing ring, and is screwed into the sealing Kong Lihou compression of pressure-bearing joint body 13 by pressure-bearing plug 4.Mud resistivity pole plate 7 is inserted into the hole of pressure-bearing joint body 13 along the radial direction of pressure-bearing joint body 13 from outside, and is sealed by sealing ring.Multicore sealing-plug 9 is positioned in the hole of pressure-bearing joint body 13, and is sealed by sealing ring.Multiple multicore sealing-plugs 12 are positioned in the hole of pressure-bearing joint body 13, and hole, with the center of circle of pressure-bearing joint body 13 as reference point, is distributed on an end face of pressure-bearing joint body 13 along different radii, and is sealed by sealing ring.Half swivel nut 3 is enclosed within the external cylindrical surface of pressure-bearing joint body 13.
According to a preferred embodiment of the invention, pressure-bearing joint body 13 material is high magnetic permeability high strength precipitation-hardening stainless steel, pressure-bearing joint body 13 two ends outer surface is respectively arranged with seal groove at two, pressure-bearing joint body 13 one end has a cavity, the other end has the internal thread hole of, described female thread has the half slot axially extended, one end face is distributed multiple sealing holes, the plurality of sealing hole is connected with the cavity of other end by multiple holes, there is sealing hole at 1 at the center of pressure-bearing joint body 13, and described sealing hole is connected with the cavity of other end by a hole.
According to a preferred embodiment of the invention, pressure-bearing joint body 13 has sealing hole, many places, and porch, described sealing hole all has chamfering, and the interior outside of chamfering is rounded off.
According to a preferred embodiment of the invention, electronic circuit iron pipe 1 is pipe, is connected with pressure-bearing joint body 13 by screw thread, and described electronic circuit iron pipe is made up of high magnetic permeability mild steel.The transmitting holding wire that electric wire section is drawn is welded with the weldering cup of multicore sealing-plug 9 by the hole of described electronic circuit iron pipe 1.
According to a preferred embodiment of the invention, electronic circuit wire casing 2 surface perimeter is distributed multiple rectangular channels, and the left hand inlet port corner angle of described rectangular channel are had centre bore by abundant cavetto, described electronic circuit wire casing 2.The reception holding wire that electric wire section is drawn is embedded in the plurality of rectangular channel and welds with the weldering cup of multiple multicore sealing-plugs 12.
According to a preferred embodiment of the invention, half swivel nut 3 is formed a domain by two semi-rings and is enclosed within the cylindrical of pressure-bearing joint body 13.
According to a preferred embodiment of the invention, multicore sealing-plug 5 is positioned at the sealing hole of pressure-bearing joint body 13, and described multicore sealing-plug 5 seals equipped with sealing ring.
According to a preferred embodiment of the invention, mud resistivity pole plate 7 has the matrix of high-temperature insulation material, mud resistivity pole plate 7 has metal and measures electrode, electrode is concentric ring structure, mud resistivity pole plate 7 is equipped with rubber seal, the outermost electrodes of mud resistivity pole plate 7 has screw thread, mud resistivity pole plate 7 is installed in the sealing hole of the external cylindrical surface of pressure-bearing joint body 13, cone groove is had outside the measurement electrode of mud resistivity pole plate 7, cone groove is positioned on pressure-bearing joint body 13 outer surface, and the cone angle of cone groove is obtuse angle.
According to a preferred embodiment of the invention, multicore sealing-plug 9 plug is positioned at the sealing hole of pressure-bearing joint body 13, and described multicore sealing-plug 9 is equipped with rubber seal, and the axle center of described multicore sealing-plug 9 is with the axis coinciding of pressure-bearing joint body 13.
According to a preferred embodiment of the invention, pressure-bearing joint body 13 is equipped with relief valve seat 14 and one-way valve seat 16.
According to a preferred embodiment of the invention, relief valve seat 14 is connected with pressure-bearing joint body 13 by screw thread, and described relief valve seat 14 is equipped with rubber seal, and described relief valve seat 14 is built with overflow valve.
According to a preferred embodiment of the invention, one-way valve seat 16 is connected with pressure-bearing joint body 13 by screw thread, described one-way valve seat 16 is equipped with rubber seal, described one-way valve seat 16 is built with contact pin type check valve, described one-way valve seat 16 circumference has multiple hole, the outer surface of the plurality of hole connection pressure-bearing joint body 13 and its inner chamber.
It is pointed out that the connection mentioned in the application can be various connection, include but not limited to threaded, rivet, weld, bonding etc..The bearing of trend in individual channel, through hole and sealing hole can be longitudinally, laterally or incline direction or combinations thereof.
Measure under the technical conditions premise that pressure-bearing joint uses for meeting mud resistivity, measure pressure-bearing joint due to mud resistivity of the present invention and have employed novel frame for movement, selected the finished product multicore sealing-plug of reliable in quality simultaneously, thus solve mud resistivity and measure the problem such as pressure-bearing joint processed complex, production cycle length, improve yield rate and the reliability of parts, reduce production cost.
For ease of explanation employ space relative terms such as " below ", " below ", D score, " on ", " on " etc. with one element of explanation relative to the location of the second element.Except being different from the orientation of those orientations described in the drawings, these terms are intended to being differently directed of device.Additionally, term such as " first ", " second " etc. are also used for describing various element, region, part etc., and also it is not intended to restrictive.Run through description, the element that similar term reference is similar.
As used herein, term " has ", " containing ", " comprising ", " including " etc. are the open-ended term that the existence of the element stated of instruction or feature but it is not excluded that other element or feature.Article " one ", " one " and " being somebody's turn to do " are intended to include plural number and odd number, unless context is expressly otherwise indicated.
Although illustrate and describe the various exemplary embodiments of the present invention above with reference to accompanying drawing, but those skilled in the art will realize the various changes and modifications of some advantages of the present invention and without departing from the spirit and scope of the present invention by clearly making.Therefore, as long as these amendments, modification and the replacement of the present invention belong within the scope of claims of the present invention and equivalent technical solutions thereof, then the present invention is also intended to comprise these amendments, modification and replacement.Additionally, with regard to using term " to include " in detailed description or the claims, " having ", " with " or their other variants for, such term be intended to by " comprise " with term similar in the way of be inclusive.
Additionally, term " exemplary " merely means that as an example rather than optimal or optimum.It will be further appreciated that feature depicted herein and/or element are in order at simple and understandable purpose and with shown in specific dimensions relative to each other, actual size may be dramatically different with size herein shown.
This area rational technique personnel are it will be appreciated that suitably can be replaced with other parts performing identical function.Even if it should be mentioned that, in the case of not yet specifically mentioning this point, can combine with the feature of other figure with reference to the feature specifically scheming to be explained.So amendment to inventive concept is intended to be covered by the appended claims.
Additionally, scope of the present application is not limited to the process described in description, machine, manufacture, material composition, device, the specific embodiment of method and steps.As those of ordinary skill in the art will readily recognize that from disclosure of the invention, can utilize according to the present invention perform the function that is substantially the same with corresponding embodiment described herein or result that realization is substantially the same, there is currently or later process leaved for development, machine, manufacture, material composition, device, method or step.Accordingly, these processes, machine, manufacture, material composition, device, method or step are included in the range of claims are directed at it.
Claims (19)
1. the pressure-bearing joint measured for the mud resistivity of induction logging instrument, including:
Pressure-bearing joint body (13), one end of described pressure-bearing joint body (13) connects electronic circuit iron pipe (1) and has a cavity and other end connection probe iron pipe (11)；
First multicore sealing-plug (9), being arranged in the first path between described electronic circuit iron pipe (1) and described probe iron pipe (11) and sealed to block described first path with pressure-bearing joint body (13) by the first sealing ring, the electronic circuit in described electronic circuit iron pipe (1) is connected with the probe in described probe iron pipe (11) via described first multicore sealing-plug (9)；
For measuring the mud resistivity pole plate (7) of mud resistivity, being arranged in the first sealing hole, described first seals hole is extended internally from the outer surface of pressure-bearing joint body (13) and is sealed with pressure-bearing joint body (13) by the second sealing ring；
For to the plug (8) of the alternate path oiling different from the first path, it is arranged in the second sealing hole, described second seals hole extends internally from the outer surface of pressure-bearing joint body (13), connect with described first sealing hole and the described other end via described alternate path, and sealed with pressure-bearing joint body (13) by the 3rd sealing ring；And
Second multicore sealing-plug (5), one end of described second multicore sealing-plug (5) connects with described alternate path and the other end connects with described cavity and is sealed with pressure-bearing joint body (13) by the 4th sealing ring, and the holding wire of described mud resistivity pole plate (7) is connected to, via described second multicore sealing-plug (5), the common circuit board that described electronic circuit is connected to.
Pressure-bearing joint the most according to claim 1, wherein said second multicore sealing-plug (5) is screwed in the 3rd sealing hole of pressure-bearing joint body (13) by pressure-bearing plug (4), and the described 3rd seals hole connects with described alternate path and described cavity.
Pressure-bearing joint the most according to claim 1, wherein said first multicore sealing-plug (9) lies in the 4th sealing hole in described first path, and described first path extends along the axis direction of pressure-bearing joint body (13).
Pressure-bearing joint the most according to claim 1, the described other end of wherein said pressure-bearing joint body (13) has an internal thread hole, and described internal thread hole has the half slot axially extended.
Pressure-bearing joint the most according to claim 1, the described other end of wherein said pressure-bearing joint body (13) is provided with the multiple 5th and seals hole, the plurality of 5th seals hole is connected with described cavity by corresponding path, and the 3rd multicore sealing-plug (12) is arranged on the plurality of 5th and seals in hole and sealed with pressure-bearing joint body (13) by the 5th sealing ring.
Pressure-bearing joint the most according to claim 5, wherein receive holding wire and be connected to described circuit board via described 3rd multicore sealing-plug (12) by corresponding path, and launch holding wire and be connected to described probe via the first multicore sealing-plug (9) by described first path.
Pressure-bearing joint the most according to claim 1, wherein said electronic circuit includes launching at least one in holding wire and reception holding wire.
Pressure-bearing joint the most according to claim 1, farther include: electronic circuit wire casing (2), being embedded in the described cavity of described pressure-bearing joint body (13), described electronic circuit iron pipe (1) passes from the centre bore of described electronic circuit wire casing (2) and is inserted into one end of pressure-bearing joint body (13) and fastens.
Pressure-bearing joint the most according to claim 7, farther include: electronic circuit wire casing (2), it is embedded in the described cavity of described pressure-bearing joint body (13), described electronic circuit iron pipe (1) passes from the centre bore of described electronic circuit wire casing (2), and described electronic circuit wire casing (2) has multiple groove spaced apart from each other to accommodate described reception holding wire and to have an inclined hole to accommodate the holding wire of described mud resistivity pole plate (7).
Pressure-bearing joint the most according to claim 9, wherein said multiple grooves are multiple rectangular channels of circle distribution, and the entrance corner angle of described rectangular channel are by abundant cavetto.
11. pressure-bearing joints according to claim 1, farther include: half swivel nut (3), are enclosed within the outer surface of pressure-bearing joint body (13).
12. pressure-bearing joints according to claim 1, wherein said electronic circuit iron pipe is made up of high magnetic permeability mild steel.
13. pressure-bearing joints according to claim 1, wherein said pressure-bearing plug (4) has external screw thread to coordinate fastening with pressure-bearing joint body (13).
14. pressure-bearing joints according to claim 1, the matrix of wherein said mud resistivity pole plate (7) is high-temperature insulation material, mud resistivity pole plate (7) has the measurement electrode of concentric ring, cone groove is had outside described measurement electrode, described cone groove is positioned on the outer surface of pressure-bearing joint body (13), the cone angle of described cone groove is obtuse angle, and the outermost electrodes of described mud resistivity pole plate (7) has screw thread to coordinate fastening with pressure-bearing joint body (13).
15. pressure-bearing joints according to claim 1, wherein said probe iron pipe is made up of high magnetic permeability mild steel.
16. pressure-bearing joints according to claim 1, farther include: relief valve seat (14), are connected and equipped with sealing ring with pressure-bearing joint body (13) by screw thread, at described relief valve seat (14) built with overflow valve.
17. pressure-bearing joints according to claim 1, farther include: one-way valve seat (16), connected and equipped with sealing ring with pressure-bearing joint body (13) by screw thread, at described one-way valve seat (16) built with contact pin type check valve, described one-way valve seat (16) circumferentially has multiple hole, the outer surface in the plurality of hole connection pressure-bearing joint body (13) and described alternate path.
18. pressure-bearing joints according to claim 1, the outer surface at the two ends of wherein said pressure-bearing joint body (13) is respectively arranged with at least one place's groove, can be provided with sealing ring on described groove.
19. 1 kinds of induction logging instruments, including electric wire section (21,22), pressure-bearing joint according to claim 1 (23) and probe section (24), wherein said pressure-bearing joint (23) connects described electric wire section (21,22) and described probe section (24), equipped with for power supply, transmitting and the Acquisition Circuit of induction logging instrument and communicating circuit in electric wire section (21,22), and equipped with the sensor for induction logging instrument in probe section (24).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304278.9A CN103628825B (en) | 2012-08-24 | 2012-08-24 | The pressure-bearing joint measured for the mud resistivity of induction logging instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210304278.9A CN103628825B (en) | 2012-08-24 | 2012-08-24 | The pressure-bearing joint measured for the mud resistivity of induction logging instrument |
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| CN103628825A CN103628825A (en) | 2014-03-12 |
| CN103628825B true CN103628825B (en) | 2016-08-10 |
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| CN201210304278.9A Expired - Fee Related CN103628825B (en) | 2012-08-24 | 2012-08-24 | The pressure-bearing joint measured for the mud resistivity of induction logging instrument |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103899302B (en) * | 2014-04-18 | 2017-03-08 | 中国海洋石油总公司 | A kind of ultrasonic imaging logging tool rotation sweep head rapid abutting joint sealing structure |
| CN105298468B (en) * | 2014-07-24 | 2020-09-04 | 中国石油集团长城钻探工程有限公司 | Pressure-bearing joint of logging instrument |
| CN107060743A (en) * | 2016-12-29 | 2017-08-18 | 中国石油天然气集团公司 | A kind of mud resistivity probe |
| CN108119130A (en) * | 2017-12-06 | 2018-06-05 | 中石化石油工程技术服务有限公司 | A kind of logging instrument pressure-bearing pole plate |
| CN110486006B (en) * | 2019-08-21 | 2022-06-14 | 中国海洋石油集团有限公司 | Resistivity measurement polar plate and manufacturing method thereof |
| CN113638707A (en) * | 2021-08-17 | 2021-11-12 | 中国石油化工股份有限公司 | Photoelectric well logging tractor |
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