CN202946150U - Formation pressure detection telescopic device - Google Patents

Formation pressure detection telescopic device Download PDF

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Publication number
CN202946150U
CN202946150U CN 201220675534 CN201220675534U CN202946150U CN 202946150 U CN202946150 U CN 202946150U CN 201220675534 CN201220675534 CN 201220675534 CN 201220675534 U CN201220675534 U CN 201220675534U CN 202946150 U CN202946150 U CN 202946150U
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CN
China
Prior art keywords
packing piston
piston cylinder
pressure
upper packing
sealing ring
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.)
Expired - Fee Related
Application number
CN 201220675534
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Chinese (zh)
Inventor
高本文
陈若铭
赵继斌
穆总结
段文广
王柳斌
王飞跃
江波
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CNPC Xibu Drilling Engineering Co Ltd
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CNPC Xibu Drilling Engineering Co Ltd
Priority date (The priority date 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 date listed.)
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Priority to CN 201220675534 priority Critical patent/CN202946150U/en
Application granted granted Critical
Publication of CN202946150U publication Critical patent/CN202946150U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the technical field of a formation pressure detection telescopic device, and discloses a formation pressure detection telescopic device which comprises a pipe body, a body, a pressure sleeve, cover plates, a filter device, an upper packing piston cylinder and an upper packing piston head, wherein a pressure transmission hole which runs through front and rear is formed in the lower part of the pipe body, and a longitudinal mounting hole which is communicated with the pressure transmission hole is formed in the pipe body; the body is fixedly mounted at the middle and lower part of the longitudinal mounting hole; the pressure sleeve is arranged in the longitudinal mounting hole in the body, and the cover plates which can longitudinally compact the pressure sleeve and the body in the longitudinal mounting hole are fixedly mounted on the pipe body at the upper end of the pressure sleeve. According to the formation pressure detection telescopic device related by the utility model, the structure is reasonable and compact, and the use is convenient; by the effect of differential pressure, a formation fluid enters the body so that the pressure in the body is as same as down-hole pressure, and the pressure in the body is measured to detect and predict the formation pressure, so as to improve the safety of underground production; the technical support is provided for testing the formation pressure domestically to reduce the device cost of the formation pressure and lower the drilling cost.

Description

The formation pressure detection stretching device
Technical field
The utility model relates to formation pressure detection device technique field, is a kind of formation pressure detection stretching device.
Background technology
Strata pressure refers to act on the pressure on formation pore inner fluid (oil, gas, water), also referred to as formation pore pressure; The detection of strata pressure and prediction, it is an important research field of oil-gas exploration and exploitation always, particularly drilling well on super-pressure area and ocean is because it is for ensureing drilling safety, improve drilling safety, improving drilling efficiency, reduce drilling cost and in time take the safeguard measure etc. of oil-gas Layer all to have great importance; But with regard to domestic, the equipment of formation testing pressure also be there is no the technology of maturation, affect domestic downhole safety production; Simultaneously external Countries to this technology at present refusal China is sold, and equipment price that can import is expensive, drilling cost is high.
Summary of the invention
The utility model provides a kind of formation pressure detection stretching device, has overcome the deficiency of above-mentioned prior art, and it can solve effectively that the equipment performance of present domestic formation testing pressure is poor and safety that cause drilling well to be produced is low and the high problem of drilling cost.
The technical solution of the utility model realizes by following measures: a kind of formation pressure detection stretching device comprises body, body, gland, cover plate, filter, upper packing piston cylinder and upper packing piston head; In the bottom of body, pre-and post perforative pressure transmission hole is arranged, the vertical installing hole that communicates with pressure transmission hole is arranged on body; Be installed with body in the middle and lower part of vertical installing hole, in the vertical installing hole above body, gland be installed, be installed with the cover plate that gland and body vertically can be pressed in vertical installing hole on the body of the upper end of gland; The through hole corresponding with body interior arranged in the middle part of cover plate; The body inner convex platform of annular is arranged at the middle part of body and body interior is divided into the flexible cavity on top and the drawing liquid cavity of bottom; The upper packing piston cylinder that can move up and down is installed in body inner convex platform and flexible cavity, and the inboard of upper packing piston cylinder is installed with filter; Middle side part is fixed with the upper packing piston head that can move up and down in flexible cavity outside upper packing piston cylinder; The upper end fixed installation of upper packing piston cylinder is useful on the piston gum cover of sealing and is sleeved in the through hole at cover plate middle part; With on body that lower end, left side and the upper end, right side of flexible cavity are connected, the first entrance pressure passage and the second entrance pressure passage are arranged respectively; And have on body that the first entrance pressure passage communicates communicate with the external world first cross pressure passageway, cross first and be installed with the first liquid pump that packing piston head and upper packing piston cylinder are moved up in pressure passageway; And have on body that the second entrance pressure passage communicates communicate with the external world second cross pressure passageway, cross second and be installed with the second liquid pump that packing piston head and upper packing piston cylinder are moved down in pressure passageway; The lower unsteady piston head that can move up and down is installed in the drawing liquid cavity; Drawing liquid entrance pressure passage is arranged at corresponding with the upper end of drawing liquid cavity body bottom; And have on body that drawing liquid entrance pressure passage communicates communicate with the external world the 3rd cross pressure passageway, cross the 3rd and be installed with the 3rd liquid pump that can aspirate outside formation fluid in pressure passageway.
The below is the further optimization and/or improvements to above-mentioned utility model technical scheme:
Above-mentioned filter can comprise the filtration body; In the inside of upper packing piston cylinder, the filtration body is installed, forms between the middle and upper part of filtration body and upper packing piston cylinder and filter ring cavity; In the inside of filtering body, the pod apertures that Open Side Down is arranged, have respectively to make on the filtration body and filter the filter opening that ring cavity communicates with pod apertures; Be installed with filter screen outside the filtration body corresponding with filter opening; At the lower outside that filters body, the external screw thread boss is arranged, the lower inside of upper packing piston cylinder and external screw thread boss are fixed together by screw thread.
Above-mentioned piston gum cover can comprise framework ring and seal rubber sleeve; Be installed with the seal rubber sleeve of annular in the upper end of framework ring; Be evenly distributed at least two guide ledges on the outer wall of framework ring; On the cover plate corresponding with guide ledges, direction recess is arranged, guide ledges is arranged in direction recess; The snap ring groove that annular is arranged in the lower end of framework ring; Internal thread is arranged at the top at upper packing piston cylinder, and the snap ring groove of seal rubber sleeve is fastened on the upper end of packing piston cylinder and is fixed together by connecting bolt, and the nut lower end of connecting bolt is seated on framework ring and is positioned at seal rubber sleeve; The liquid pass hole that communicates with upper packing piston cylinder is arranged in the inside of connecting bolt.
The horizontal mounting groove that communicates with the top of vertical installing hole can be arranged on above-mentioned body, in the horizontal mounting groove in vertical installing hole outside, threaded connection hole is arranged respectively, cover plate is fixedly mounted in horizontal mounting groove by attachment screw.
Above-mentioned upper packing piston head can be ladder platform shape or the frustum of outer narrow inner width.
Between above-mentioned body upper outside and body, sealing ring can be installed; Between body lower outside and body, sealing ring is installed; Between the inner of skeleton cover and upper packing piston cylinder, sealing ring is installed; Between the inner of gland and upper packing piston cylinder, sealing ring is installed; Between the outer end of gland and body, sealing ring is installed; Between upper packing piston head outer end and body, sealing ring is installed; Between the outer end, bottom of upper packing piston cylinder and body inner convex platform, sealing ring is installed; Between lower floating piston outer end and body, sealing ring is installed.
Can there be respectively interior six side's grooves the lower end of the upper end of above-mentioned attachment screw, the upper end of connecting bolt, filtration body.
The utility model reasonable and compact in structure, easy to use; By differential pressure action, formation fluid enter make in body in body identical with strata pressure, thereby and the body internal pressure is measured the detection and prediction of realizing strata pressure, the safety of raising drilling well; Provide technical support to domestic formation testing pressure, thereby reduce the price of formation testing press device, reduce drilling cost.
Description of drawings
Accompanying drawing 1 is the main TV structure schematic diagram of the utility model most preferred embodiment.
Accompanying drawing 2 is that the A-A of accompanying drawing 1 is to the sectional structure schematic diagram.
coding in accompanying drawing is respectively: 1 is body, 2 is pressure transmission hole, 3 is body, 4 is gland, 5 is cover plate, 6 is liquid pass hole, 7 is the body inner convex platform, 8 are flexible cavity, 9 is the drawing liquid cavity, 10 is upper packing piston cylinder, 11 is upper packing piston head, 12 is the first entrance pressure passage, 13 is the second entrance pressure passage, 14 is the first mistake pressure passageway, 15 is the first liquid pump, 16 is the second mistake pressure passageway, 17 is the second liquid pump, 18 is lower unsteady piston head, 19 is drawing liquid entrance pressure passage, 20 is the 3rd mistake pressure passageway, 21 is the 3rd liquid pump, 22 for filtering body, 23 for filtering ring cavity, 24 is pod apertures, 25 is filter opening, 26 is the external screw thread boss, 27 is framework ring, 28 is seal rubber sleeve, 29 is guide ledges, 30 is connecting bolt, 31 is attachment screw, 32 is sealing ring.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts is all that the Butut mode according to Figure of description 2 is described, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 2.
Below in conjunction with embodiment and accompanying drawing, the utility model is further described:
As shown in accompanying drawing 1,2, this formation pressure detection stretching device comprises body 1, body 3, gland 4, cover plate 5, filter, upper packing piston cylinder 10 and upper packing piston head 11; Pre-and post perforative pressure transmission hole 2 is arranged in the bottom of body 1, the vertical installing hole that communicates with pressure transmission hole 2 is arranged on body 1; Be installed with body 3 in the middle and lower part of vertical installing hole, in the vertical installing hole above body 3, gland 4 be installed, be installed with the cover plate 5 that gland 4 and body 3 vertically can be pressed in vertical installing hole on the body 1 of the upper end of gland 4; The through hole inner corresponding with body 3 arranged at cover plate 5 middle parts; The body inner convex platform 7 of annular is arranged at the middle part of body 3 and body 3 inside are divided into the flexible cavity 8 on top and the drawing liquid cavity 9 of bottom; The upper packing piston cylinder 10 that can move up and down is installed in body inner convex platform 7 and flexible cavity 8, and the inboard of upper packing piston cylinder 10 is installed with filter; Be fixed with the upper packing piston head 11 that can move up and down in flexible cavity 8 at the outer middle side part of upper packing piston cylinder 10; The upper end fixed installation of upper packing piston cylinder 10 is useful on the piston gum cover of sealing and is sleeved in the through hole at cover plate 5 middle parts; With on body 3 that lower end, left side and the upper end, right side of flexible cavity 8 are connected, the first entrance pressure passage 12 and the second entrance pressure passage 13 are arranged respectively; And have on body 1 that the first entrance pressure passage 12 communicates communicate with the external world first cross pressure passageway 14, cross first and be installed with the first liquid pump 15 that packing piston head 11 and upper packing piston cylinder 10 are moved up in pressure passageway 14; And have on body 1 that the second entrance pressure passage 13 communicates communicate with the external world second cross pressure passageway 16, cross second and be installed with the second liquid pump 17 that packing piston head 11 and upper packing piston cylinder 10 are moved down in pressure passageway 16; The lower unsteady piston head 18 that can move up and down is installed in drawing liquid cavity 9; Drawing liquid entrance pressure passage 19 is arranged at corresponding with the upper end of drawing liquid cavity 9 body 3 bottoms; And have on body 1 that drawing liquid entrance pressure passage 19 communicates communicate with the external world the 3rd cross pressure passageway 20, cross the 3rd and be installed with the 3rd liquid pump 21 that can aspirate outside formation fluid in pressure passageway 20.The utility model and pressure sensor, control circuit and clamp-pulse generator are connected in turn by cable and are placed in the down-hole; During use, suppress by the first liquid pump 15, the pushing force drive that the lower end of upper packing piston head 11 is subject to upwards upward moves on packing piston cylinder 10, and the piston gum cover withstands on the inwall of down-hole with moving on upper packing piston cylinder 10, seals; With the downhole annulus pressure packing outside, having guaranteed like this to record pressure is strata pressure; Restart the 3rd liquid pump 21 high pressure suctions, pressure can drop to lower than strata pressure, produce Negative Pressure Difference, formation fluid can under the effect of pressure reduction successively by the piston gum cover, on packing piston head 11 and filter enter drawing liquid cavity 9 and promote under the piston head 18 that floats descend, this moment, the force value that reflects was stablized when constant, and this value is exactly the strata pressure value of needs; Be transferred to control circuit by the force value that will record again, control circuit is processed conversion with the pressure signal of receiving, clamp-pulse generator action generation mud signal is passed formation pressure data back ground the data processing is changed and stored; Realize detection and the prediction of strata pressure; Suppress by the second liquid pump 17, the upper end of upper packing piston head 11 is subject to downward pushing force drive lower seal septum piston bar and moves down playback, and is reusable again; Can improve drilling safety like this, reduce simultaneously drilling cost, efficient is high.
Can according to actual needs, above-mentioned formation pressure detection stretching device be made further optimization and/or improvements:
As shown in accompanying drawing 1,2, filter comprises filtration body 22; Be equipped with in the inside of upper packing piston cylinder 10 and filter body 22, form between the middle and upper part of filtration body 22 and upper packing piston cylinder 10 and filter ring cavity 23; In the inside of filtering body 22, the pod apertures 24 that Open Side Down is arranged, have respectively to make on filtration body 22 and filter the filter opening 25 that ring cavity 23 communicates with pod apertures 24; Corresponding with filter opening 25 filtration body 22 outsides are installed with filter screen; At the lower outside that filters body 22, external screw thread boss 26 is arranged, the lower inside of upper packing piston cylinder 10 and external screw thread boss 26 are fixed together by screw thread.Formation fluid enters from the piston gum cover and filters ring cavity 23, enter in drawing liquid cavity 9 through filter screen, filter opening 25 and pod apertures 24 again, in this process, can play to formation fluid the effect of filtration, prevent that foreign material from stopping up lower unsteady piston head 18, the movement of the lower unsteady piston head 18 of impact.
As shown in accompanying drawing 1,2, the piston gum cover comprises framework ring 27 and seal rubber sleeve 28; Be installed with the seal rubber sleeve 28 of annular in the upper end of framework ring 27; Be evenly distributed at least two guide ledges 29 on the outer wall of framework ring 27; On the cover plate 5 corresponding with guide ledges 29, direction recess is arranged, guide ledges 29 is arranged in direction recess; The snap ring groove that annular is arranged in the lower end of framework ring 27; Internal thread is arranged at the top at upper packing piston cylinder 10, the snap ring groove of seal rubber sleeve 28 is fastened on the upper end of packing piston cylinder 10 and is fixed together by connecting bolt 30, and the nut lower end of connecting bolt 30 is seated on framework ring 27 and is positioned at seal rubber sleeve 28; The liquid pass hole 6 that communicates with upper packing piston cylinder 10 is arranged in the inside of connecting bolt 30.Can be convenient to dismounting of the present utility model like this, use more convenient; Formation fluid can enter by liquid pass hole 6 and filter in ring cavity 23.
As shown in accompanying drawing 1,2, the horizontal mounting groove that communicates with the top of vertical installing hole is arranged on body 1, in the horizontal mounting groove in vertical installing hole outside, threaded connection hole is arranged respectively, cover plate 5 is fixedly mounted in horizontal mounting groove by attachment screw 31.Be convenient to the dismounting between body 1 and body 3, easy to use.
As shown in accompanying drawing 1,2, upper packing piston head 11 is ladder platform shape or the frustum of outer narrow inner width.When the upper packing piston head 11 of the first 15 pairs of liquid pumps was suppressed, pressure crosses pressure passageway 14 by first successively and the first feed pathway enters in flexible cavity 8, and pressure-acting is on the lower surface of upper packing piston head 11; Because employing is the ladder platform shape of outer narrow inner width or the upper packing piston head 11 of frustum, the easier lower surface application of force to upper packing piston head 11 of pressure makes packing piston head 11 drive upper packing piston cylinder 10 and rises; With the first liquid pump 15 in like manner, the second liquid pump 17 promotes the packing piston heads and drives upper packing piston cylinders 10 and descend and return.
As shown in accompanying drawing 1,2, between body 3 upper outside and body 1, sealing ring 32 is installed; Between body 3 lower outsides and body 1, sealing ring 32 is installed; Between the inner of skeleton cover and upper packing piston cylinder 10, sealing ring 32 is installed; Between the inner of gland 4 and upper packing piston cylinder 10, sealing ring 32 is installed; Between the outer end of gland 4 and body 1, sealing ring 32 is installed; Between upper packing piston head 11 outer ends and body 3, sealing ring 32 is installed; Between the outer end, bottom of upper packing piston cylinder 10 and body inner convex platform 7, sealing ring 32 is installed; Between lower floating piston outer end and body 3, sealing ring 32 is installed.Sealing ring 32 plays the sealing effect that increases between contact surface.
As shown in accompanying drawing 1,2, in the upper end of attachment screw 31, the upper end of connecting bolt 30, the lower end of filtration body 22, interior six side's grooves are arranged respectively.When attachment screw 31, connecting bolt 30 and filtration body 22 are installed, can adopt hexagon, be convenient to install.
Above technical characterictic has consisted of most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, satisfies the demand of different situations.
The use procedure of the utility model most preferred embodiment: at first the utility model is connected cable with pressure sensor, control circuit and clamp-pulse generator and is connected successively and transfers to the position that adds lower needs detection; Control by control circuit and open the first liquid pump 15 and suppress, make packing piston head 11 and upper packing piston cylinder 10 increase, and drive the piston gum cover and stretch out, seal rubber sleeve 28 withstands on the inwall of down-hole; Control by control circuit and stop the first liquid pump 15, open the 3rd liquid pump, suction by the 3rd liquid pump, downhole fluid through liquid pass hole 6, filter ring cavity 23, then enter drawing liquid cavity 9 through filter screen, filter opening 25 and pod apertures 24, promote lower unsteady piston head 18 and move down, floating piston is descending, can cause lower liquid chamber volume to reduce, in the duct, liquid is stressed and is the pressure that floating piston is subjected to, and liquid 15 spreads out of through the duct; When pressure can drop to strata pressure, suction stopped; Measure the force value in the utility model and be transferred to control circuit, control circuit is processed conversion with the pressure signal of receiving, clamp-pulse generator action produces mud signal and passes formation pressure data back ground and data are processed to change and store get final product.

Claims (10)

1. a formation pressure detection stretching device, is characterized in that comprising body, body, gland, cover plate, filter, upper packing piston cylinder and upper packing piston head; In the bottom of body, pre-and post perforative pressure transmission hole is arranged, the vertical installing hole that communicates with pressure transmission hole is arranged on body; Be installed with body in the middle and lower part of vertical installing hole, in the vertical installing hole above body, gland be installed, be installed with the cover plate that gland and body vertically can be pressed in vertical installing hole on the body of the upper end of gland; The through hole corresponding with body interior arranged in the middle part of cover plate; The body inner convex platform of annular is arranged at the middle part of body and body interior is divided into the flexible cavity on top and the drawing liquid cavity of bottom; The upper packing piston cylinder that can move up and down is installed in body inner convex platform and flexible cavity, and the inboard of upper packing piston cylinder is installed with filter; Middle side part is fixed with the upper packing piston head that can move up and down in flexible cavity outside upper packing piston cylinder; The upper end fixed installation of upper packing piston cylinder is useful on the piston gum cover of sealing and is sleeved in the through hole at cover plate middle part; With on body that lower end, left side and the upper end, right side of flexible cavity are connected, the first entrance pressure passage and the second entrance pressure passage are arranged respectively; And have on body that the first entrance pressure passage communicates communicate with the external world first cross pressure passageway, cross first and be installed with the first liquid pump that packing piston head and upper packing piston cylinder are moved up in pressure passageway; And have on body that the second entrance pressure passage communicates communicate with the external world second cross pressure passageway, cross second and be installed with the second liquid pump that packing piston head and upper packing piston cylinder are moved down in pressure passageway; The lower unsteady piston head that can move up and down is installed in the drawing liquid cavity; Drawing liquid entrance pressure passage is arranged at corresponding with the upper end of drawing liquid cavity body bottom; And have on body that drawing liquid entrance pressure passage communicates communicate with the external world the 3rd cross pressure passageway, cross the 3rd and be installed with the 3rd liquid pump that can aspirate outside formation fluid in pressure passageway.
2. formation pressure detection stretching device according to claim 1, is characterized in that filter comprises the filtration body; In the inside of upper packing piston cylinder, the filtration body is installed, forms between the middle and upper part of filtration body and upper packing piston cylinder and filter ring cavity; In the inside of filtering body, the pod apertures that Open Side Down is arranged, have respectively to make on the filtration body and filter the filter opening that ring cavity communicates with pod apertures; Be installed with filter screen outside the filtration body corresponding with filter opening; At the lower outside that filters body, the external screw thread boss is arranged, the lower inside of upper packing piston cylinder and external screw thread boss are fixed together by screw thread.
3. formation pressure detection stretching device according to claim 1 and 2, is characterized in that the piston gum cover comprises framework ring and seal rubber sleeve; Be installed with the seal rubber sleeve of annular in the upper end of framework ring; Be evenly distributed at least two guide ledges on the outer wall of framework ring; On the cover plate corresponding with guide ledges, direction recess is arranged, guide ledges is arranged in direction recess; The snap ring groove that annular is arranged in the lower end of framework ring; Internal thread is arranged at the top at upper packing piston cylinder, and the snap ring groove of seal rubber sleeve is fastened on the upper end of packing piston cylinder and is fixed together by connecting bolt, and the nut lower end of connecting bolt is seated on framework ring and is positioned at seal rubber sleeve; The liquid pass hole that communicates with upper packing piston cylinder is arranged in the inside of connecting bolt.
4. formation pressure detection stretching device according to claim 3, it is characterized in that the horizontal mounting groove that communicates with the top of vertical installing hole is arranged on body, in the horizontal mounting groove in vertical installing hole outside, threaded connection hole is arranged respectively, cover plate is fixedly mounted in horizontal mounting groove by attachment screw.
5. formation pressure detection stretching device according to claim 1 and 2, is characterized in that the packing piston head is ladder platform shape or the frustum of outer narrow inner width.
6. formation pressure detection stretching device according to claim 3, is characterized in that the packing piston head is ladder platform shape or the frustum of outer narrow inner width.
7. formation pressure detection stretching device according to claim 4, is characterized in that the packing piston head is ladder platform shape or the frustum of outer narrow inner width.
8. formation pressure detection stretching device according to claim 3, is characterized in that between body upper outside and body, sealing ring being installed; Between body lower outside and body, sealing ring is installed; Between the inner of skeleton cover and upper packing piston cylinder, sealing ring is installed; Between the inner of gland and upper packing piston cylinder, sealing ring is installed; Between the outer end of gland and body, sealing ring is installed; Between upper packing piston head outer end and body, sealing ring is installed; Between the outer end, bottom of upper packing piston cylinder and body inner convex platform, sealing ring is installed; Between lower floating piston outer end and body, sealing ring is installed.
9. formation pressure detection stretching device according to claim 7, is characterized in that between body upper outside and body, sealing ring being installed; Between body lower outside and body, sealing ring is installed; Between the inner of skeleton cover and upper packing piston cylinder, sealing ring is installed; Between the inner of gland and upper packing piston cylinder, sealing ring is installed; Between the outer end of gland and body, sealing ring is installed; Between upper packing piston head outer end and body, sealing ring is installed; Between the outer end, bottom of upper packing piston cylinder and body inner convex platform, sealing ring is installed; Between lower floating piston outer end and body, sealing ring is installed.
10. formation pressure detection stretching device according to claim 9, is characterized in that there are respectively interior six side's grooves the upper end of attachment screw, the upper end of connecting bolt, the lower end of filtration body.
CN 201220675534 2012-12-10 2012-12-10 Formation pressure detection telescopic device Expired - Fee Related CN202946150U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220675534 CN202946150U (en) 2012-12-10 2012-12-10 Formation pressure detection telescopic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220675534 CN202946150U (en) 2012-12-10 2012-12-10 Formation pressure detection telescopic device

Publications (1)

Publication Number Publication Date
CN202946150U true CN202946150U (en) 2013-05-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220675534 Expired - Fee Related CN202946150U (en) 2012-12-10 2012-12-10 Formation pressure detection telescopic device

Country Status (1)

Country Link
CN (1) CN202946150U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108397189A (en) * 2018-02-13 2018-08-14 中国海洋石油集团有限公司 A kind of formation testing probe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108397189A (en) * 2018-02-13 2018-08-14 中国海洋石油集团有限公司 A kind of formation testing probe
CN108397189B (en) * 2018-02-13 2021-12-10 中国海洋石油集团有限公司 Formation test probe

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130522

Termination date: 20201210