CN202467833U - Electrically controlled high-pressure physical property sampling system - Google Patents
Electrically controlled high-pressure physical property sampling system Download PDFInfo
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- CN202467833U CN202467833U CN2012200598740U CN201220059874U CN202467833U CN 202467833 U CN202467833 U CN 202467833U CN 2012200598740 U CN2012200598740 U CN 2012200598740U CN 201220059874 U CN201220059874 U CN 201220059874U CN 202467833 U CN202467833 U CN 202467833U
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Abstract
The utility model relates to an electrically controlled high-pressure physical property sampling system which comprises a computer, an interface box and a sampling device, wherein one end of the interface box is connected with the computer through a cable, and the other end of the interface box is connected with the sampling device through the cable; and the sampling device comprises a cable sealer as well as a medium detector, an electric controller and a sampling barrel which are connected with the cable sealer in sequence. According to the device, the problems that the conventional oil field is blind and is low in control precision and is repeatedly operated when high-pressure physical property sampling is carried out can be solved.
Description
Technical field
The utility model relates to the well sampling system, particularly a kind of electric-controlled type high pressure physical property sample system.
Background technology
In the exploration and development process in oil field; Often need carry out the high pressure physical property sample operation in the down-hole, its objective is the bubble point pressure of grasping crude oil at any time, so that formulate development plan or adjustment production system; And the on-the-spot employed sampler in present oil field; All be that paddle type mill, wall-hanging and the clock of continuing to use the pure machinery in former Soviet Union period hits old-fashioned high pressure physical property sample such as formula system, success rate is extremely low, often is the operation that can accomplish in one day; Took one month or the longer time could obtain qualified high pressure property sample in the down-hole, have a strong impact on field produces.Owing to there is not detection system, bear the character of much blindness when therefore taking a sample during sampling, operating efficiency is very low, and accuracy is lower.Therefore, the needs invention is a kind of can take a sample the device that control accuracy is high at any time according to down-hole medium situation.
Summary of the invention
The purpose of the utility model is to the problems referred to above a kind of electric-controlled type high pressure physical property sample system to be provided, solve present oil field when high pressure physical property sample relatively blindly, often repeat operation, the problem that control accuracy is not high.
The utility model is realized through following technical scheme: electric-controlled type high pressure physical property sample system, and this device comprises computer, interface box and sampler, and interface box one end is connected with computer through cable, and the other end links to each other with sampler through cable; Wherein, Sampler comprise the cable seal device and with its medium survey meter, electric controller and sampling tube that is connected successively; The both ends open place of sampling tube be equipped with respectively can the shutoff opening upper valve rod and lower valve rod; Upper valve rod is connected through the opposite spring of active force with the sampling tube inwall respectively with lower valve rod, and between two valve rods locking mechanism is housed; Electric controller comprises motor, leading screw and screw, and control circuit is arranged on the motor, and the output of motor is connected with leading screw, and screw one end is sleeved on the leading screw, and the other end is connected with upper valve rod through position-limit mechanism; Control circuit links to each other with interface box through cable respectively with the medium survey meter;
Described locking mechanism comprises sliding sleeve and fixed cover one, and wherein, sliding sleeve and lower valve rod are affixed, and the lower valve rod inwall has outwards outstanding oblique shoulder; The sliding sleeve internal sleeve is equipped with fixed cover one, and fixed cover one is affixed with sampling tube, and between the end of fixed cover one and sliding sleeve spring is housed, and fixed cover one end has fluid passage; Fixed cover one has open-work on the two side that is positioned at sliding sleeve inside, be equipped with steel ball in the open-work respectively; Upper valve rod places in the fixed cover one and there is oblique step the end;
Described position-limit mechanism comprises securing rod, fixed cover two and control lever, and wherein, securing rod one end and screw are affixed, and the oblique shoulder that caves inward is arranged on the other end inwall; Be set with fixed cover two in the securing rod, fixed cover two is affixed with the electric controller outer wall, has open-work on the two side of fixed cover two, is equipped with steel ball in the open-work respectively; Control lever one end is sleeved in the fixed cover two and there is oblique step the end, and the other end contacts with upper valve rod.
Described sampling tube is that a plurality of, adjacent sampling tubes is connected through clutch.
Described clutch comprises fixed cover three, frizzen and control lever two, and wherein, the two ends of fixed cover three connect sampling tube respectively, and fluted on the inwall of fixed cover three; One end of control lever two is positioned at fixed cover three, and has open-work on the two side, is equipped with steel ball in the open-work respectively; One end of frizzen contacts with lower valve rod in the last sampling tube, and an end is sleeved in the control lever two and there is oblique step the end.
Described sampling tube is 2～3.
Adopt the good effect of technique scheme: the utility model is with sampling tube and medium detector Combined application, and therefore the while is by computer control; The process of sampling is under the guidance of medium detector, to carry out; Avoided blindly sampling, the rate that assures success has improved sampling efficiency greatly; Adopted opening and closing of electric controller control sampling tube owing to adopted high-accuracy lead screw transmission, before paddle type mill, wall-hanging and the clock of pure machinery hit old-fashioned high pressure physical property sample such as formula system, control accuracy is high, has improved the success rate of sampling; Between the upper and lower valve rod locking mechanism is arranged, avoid lower valve rod to fall automatically, cause the inaccurate problem of sampling medium, guarantee that control freely under high temperature, high pressure; Owing to increased position-limit mechanism between screw and the upper valve rod; Make control lever and securing rod when returning, not be synchronized with the movement; But the back produces the jumping position arriving to a certain degree, makes upper valve rod discharge suddenly, and upper and lower then valve rod is under the active force of spring; Suddenly with the two ends shutoff of sampling tube, sealing effectiveness is better; This device can be taken a sample according to down-hole medium situation at any time, controls a plurality of sampling tubes through clutch, can take out 3 samples simultaneously at most, and is easy to use.
Description of drawings
Fig. 1 is the overall schematic of the utility model;
Fig. 2 is the structural representation of electric controller and sampling tube;
Fig. 3 is the work sketch map one of electric controller and sampling tube;
Fig. 4 is the work sketch map two of electric controller and sampling tube;
Fig. 5 is the structural representation of clutch and sampling tube;
Fig. 6 is the work sketch map of clutch and sampling tube.
Among the figure: 1 computer, 2 interface boxs, 3 cable seal devices, 4 medium survey meters, 5 electric controllers, 6 sampling tubes; 7 upper valve rods, 8 lower valve rods, 9 clutchs, 10 motors, 11 leading screws, 12 screws; 13 control circuits, 14 sliding sleeves, 15 fixed covers one, 16a, 16b, 16c steel ball, 17 securing rods; 18 fixed covers, two, 19 control levers, one, 20 fixed cover, three, 21 frizzens, 22 control levers two.
The specific embodiment
Shown in Figure 1 is the overall schematic of the utility model, and Fig. 2 is the structural representation of electric controller and sampling tube, and Fig. 3 is the work sketch map one of electric controller and sampling tube; Fig. 4 is the work sketch map two of electric controller and sampling tube; In conjunction with Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, electric-controlled type high pressure physical property sample system, this device comprises computer 1, interface box 2 and sampler; Interface box 2 one ends are connected with computer 1 through cable, and the other end links to each other with sampler through cable.Computer 1 is used for storage, calculated data, and interface box 2 is used for the conversion of data format, and sampler then is used for the sampling of high pressure property material.Wherein, Sampler comprise cable seal device 3 and with its medium survey meter 4 that is connected successively, electric controller 5 and sampling tube 6; Cable seal device 3 is used for the position that cable gets into is sealed; Medium survey meter 4 can accurately analyze oil, gas, the distribution situation of aqueous medium in pit shaft in the well, and electric controller 5 is used to control the switching of sampling tube 6, thereby takes a sample.The both ends open place of sampling tube 6 be equipped with respectively can the shutoff opening upper valve rod 7 and lower valve rod 8; Upper valve rod 7 is connected through the opposite spring of active force with sampling tube 6 inwalls respectively with lower valve rod 8; Under the ordering about of the reaction force of spring; Can upper valve rod 7 and lower valve rod 8 be withstood on the upper and lower opening place of sampling tube 6, thereby with sampling tube 6 sealings.Between upper valve rod 7 and the lower valve rod 8 locking mechanism is housed, when upper valve rod 7 receives thrust when descending, the locking mechanism between upper valve rod 7 and the lower valve rod 8 is closed, thereby fixing lower valve rod 8 is opened the under shed of sampling tube 6.Electric controller 5 comprises motor 10, leading screw 11 and screw 12, and control circuit 13 is arranged on the motor 10, and the output of motor 10 is connected with leading screw 11, and screw 12 1 ends are sleeved on the leading screw 11, and the other end is connected with upper valve rod 7 through position-limit mechanism.The just commentaries on classics of motor 10 or counter-rotating all can drive leading screw 11 and rotate together; Because screw 12 1 ends are sleeved on the leading screw 11; Therefore the rotation of leading screw 11 can cause screw 12 on leading screw 11 along screw advancement or retreat; To rotatablely move is converted into rectilinear motion, produces and advances or retreat thereby order about upper valve rod 7 through position-limit mechanism.Control circuit 13 links to each other with interface box 2 through cable respectively with medium survey meter 4; Therefore; 4 signals detected of medium survey meter get into computer 1 through interface box 2 and carry out computing, send signal after computer 1 computing, pass to control circuit 13 through interface box 2; The just commentaries on classics of control motor 10 is still reversed, thus control sampling tube 6.
In this device, locking mechanism comprises sliding sleeve 14 and fixed cover 1, and wherein, sliding sleeve 14 is affixed with lower valve rod 8, and lower valve rod 8 inwalls have outwards outstanding oblique shoulder.Sliding sleeve 14 internal sleeve are equipped with fixed cover 1; Fixed cover 1 is affixed with sampling tube 6, and between the end of fixed cover 1 and sliding sleeve 14 spring is housed, and the effect of spring is when the reduced distances between fixed cover 1 and the sliding sleeve 14; Under the elastic force effect of spring, can set back rapidly.Fixed cover one 15 ends have fluid passage, make things convenient for liquid to pass through.Fixed cover 1 has open-work on the two side that is positioned at sliding sleeve 14 inside, be equipped with steel ball 16a in the open-work respectively, and steel ball 16a can produce radial motion in open-work, but can not skid off open-work.Upper valve rod 7 places in the fixed cover 1 and there is oblique step the end; When oblique step acts on steel ball 16a; Thereby steel ball 16a can be squeezed and in open-work, produce radial motion; When steel ball 16a stretched out the oblique shoulder that is stuck in lower valve rod 8 inwalls in open-work, lower valve rod 8 locked with upper valve rod 7, opens the lower ending opening of sampling tube 6.Withdraw from and work as upper valve rod 7; When steel ball 16a has lost the squeezing action of oblique step; Steel ball 16a can set back in open-work, has lost the control action to lower valve rod 8, and upper valve rod 7 can be under the effect of the opposite spring of active force with lower valve rod 8; And under the acting force of the spring between fixed cover 1 and the sliding sleeve 14, the upper and lower side opening of shutoff sampling tube 6 together.
Position-limit mechanism comprises securing rod 17, fixed cover 2 18 and control lever 1, and wherein, securing rod 17 1 ends and screw 12 are affixed, and the oblique shoulder that caves inward is arranged on the other end inwall.Be set with fixed cover 2 18 in the securing rod 17, fixed cover 2 18 is affixed with electric controller 5 outer walls, has open-work on the two side of fixed cover 2 18, is equipped with steel ball 16b in the open-work respectively, and steel ball 16b can produce radial motion in open-work, but can not skid off open-work.Control lever one 19 one ends are sleeved in the fixed cover 2 18 and there is oblique step the end, and the other end contacts with upper valve rod 7.Under the nature, steel ball 16b is stuck in the end of control lever 1, because fixed cover 2 18 is fixed, makes control lever 1 to move, and at this moment, if securing rod 17 is subjected to displacement, control lever 1 can together not produce displacement with securing rod 17 yet; When securing rod 17 is subjected to displacement; Make the oblique shoulder that caves inward on securing rod 17 inwalls and steel ball 16b position just in time relatively the time; Steel ball 16b stretches out from open-work, thereby loses the control to control lever one 19 ends, under the active force of the spring between upper valve rod 7 and sampling tube 6 inwalls; Control lever 1 discharges rapidly, makes the open upper end of upper valve rod 7 shutoff sampling tubes 6.
Fig. 5 is the structural representation of clutch and sampling tube, and Fig. 6 is the work sketch map of clutch and sampling tube, in conjunction with Fig. 5, shown in Figure 6, in practical application, only getting a sample has very big application limitation at every turn.Therefore, in order to get a plurality of samples simultaneously, sampling tube 6 is set to a plurality of, is generally 2～3, adjacent sampling tube 6 is connected through clutch 9.When sampling tube 6 closures of electric controller 5 controls are taken a sample, can order about other sampling tube 6 closure, sampling simultaneously together through clutch 9.
In this device, clutch 9 comprises fixed cover 3 20, frizzen 21 and control lever 2 22, and wherein, the two ends of fixed cover 3 20 connect sampling tube 6 respectively, and fluted on the inwall of fixed cover 3 20, and groove is used for control procedure and holds steel ball 16c.One end of control lever 2 22 is positioned at fixed cover 3 20, and has open-work on the two side, is equipped with steel ball 16c in the open-work respectively, and the other end then contacts with the upper valve rod 7 of next sampling tube 6, and steel ball 16c can produce radial motion in open-work, but can not skid off open-work.One end of frizzen 21 contacts with lower valve rod 8 in the last sampling tube 6, and an end is sleeved in the control lever 2 22 and there is oblique step the end.Under the nature, steel ball 16c is stuck in the groove of fixed cover 3 20 inwalls, thereby has fixed control lever 2 22, and control lever 2 22 is the state that backs down the upper valve rod 7 of next sampling tube 6, and the locking mechanism between upper valve rod 7 and the lower valve rod 8 is closed; When a last sampling tube 6 receives the control of electric controller 5, upper valve rod 7 and lower valve rod 8 when move at two ends, can apply active force to frizzen 21 together.Because there is oblique step frizzen 21 ends, therefore, steel ball 16c can glide along step; Leave groove; Lost control to control lever 2 22, thus the upper valve rod of next sampling tube 67 states out of hand, and the locking mechanism between upper valve rod 7 and the lower valve rod 8 is opened; Upper valve rod 7 seals next sampling tube 6 with lower valve rod 8 together, accomplishes the process of synchronized sampling.
During use, earlier computer 1, interface box 2 and sampler are connected with cable.At first the lower valve rod in the sampling tube 68 is applied the power greater than spring, make that lower valve rod 8 is up, open earlier the lower end of sampling tube 6.Then electric controller 5 and sampling tube 6 are connected.At this moment, because steel ball 16b is stuck in the end of control lever 1, make control lever 1 to move, the other end of control lever 1 backs down the upper valve rod 7 in the sampling tube 6.In sampling tube 6, because upper valve rod 7 is descending, the oblique step in upper valve rod 7 ends can produce extruding force radially to steel ball 16a; When steel ball 16a stretches out the oblique shoulder that is stuck in lower valve rod 8 inwalls in open-work; Lower valve rod 8 and upper valve rod 7 lockings, open at the two ends of sampling tube 6.At this moment, after the power that lower valve rod 8 is applied disappeared, lower valve rod 8 can not fall yet, and kept the open mode of sampling tube 6.Because the lower end of a sampling tube 6 also possibly be connected with clutch 9, sampling tube 6, clutch 9, sampling tube 6 in turn; Principle is the same; The lower valve rod of a plurality of sampling tubes 6 is opened earlier, installs after the clutch 9, because steel ball 16c is stuck in the groove of fixed cover 3 20 inwalls; Thereby fixed control lever 2 22; Control lever 2 22 is the state that backs down the upper valve rod 7 of next sampling tube 6, and the locking mechanism between upper valve rod 7 and the lower valve rod 8 is closed, and the upper and lower side of promptly a plurality of sampling tubes 6 all is in open mode.If first sampling tube 6 not shutoff, promptly the bottom of lower valve rod 8 is not reach frizzen 21 in the clutch 9, and therefore, whole sampler is in open mode always.
Then, in well, liquid gets in the sampling tube 6 under the single unit system.Medium detector 4 can carry out check and analysis to the down-hole medium, and to make the down-hole medium clear be oil, be water or gas, then signal is beamed back computer 1 through interface box 2.After computer 1 is analyzed,, then can send instruction, issue control circuit 13 through interface box 2 if think the destination media of present medium for taking a sample.Control circuit 13 can be controlled motor 10 counter-rotation, drives leading screw 11 and rotates together, cause screw 12 beginnings up along screw thread, thereby it is up to drive securing rod 17.Because under nature; Between the oblique shoulder on steel ball 16b and securing rod 17 inwalls certain distance is arranged, therefore, when securing rod 17 is up at the beginning; Steel ball 16b still has locking action to control lever 1, and promptly control lever 1 can synchronous shift not take place together with securing rod 17.When securing rod 17 has been up to certain position; Be steel ball 16b can enter into the oblique shoulder of securing rod 17 inwalls the time, steel ball 16b can slide along oblique shoulder under the effect of extruding force, lose the control to control lever 1; At this moment, control lever 1 can move freely.Because withstand the bottom of control lever 1 is the upper valve rod 7 in the sampling tube 6, be connected through spring between the inwall of upper valve rod 7 and sampling tube 6, under the elastic force effect of spring, upper valve rod 7 is up with control lever 1, the open upper end of shutoff sampling tube 6.In sampling tube 6; Because upper valve rod 7 is up, therefore eliminated radial compression power to steel ball 16a, steel ball 16a bounces back in open-work; Deviate from from the oblique shoulder of lower valve rod 8 inwalls; Removed state of a control to lower valve rod 8, then lower valve rod 8 under the active force of spring, the lower ending opening of shutoff sampling tube 6.Whole process is accomplished in a short period of time simultaneously, and control lever 1 produces suddenly and jumps the position, makes that the plugging action power at upper valve rod 7 and 8 pairs of sampling tube 6 two ends of lower valve rod is big, and plugging effect is good.
Because the lower end of a sampling tube 6 also is connected with clutch 9, sampling tube 6, clutch 9, sampling tube 6 in turn; Therefore; If the lower valve rod 8 of first sampling tube 6 is had an effect suddenly; During the lower ending opening of shutoff sampling tube 6, can produce a downward active force suddenly to the frizzen in the clutch 9 21.Original steel ball 16c is the groove that is stuck in fixed cover 3 20 inwalls, and when frizzen 21 received downward active force, frizzen 21 was descending suddenly; Because there is oblique step frizzen 21 ends, when step slipped over steel ball 16c, steel ball 16c can slide along step; Thereby deviate from from inside grooves, lost control, under the effect of the power that control lever 2 22 can be produced at the upper valve rod 7 of second sampling tube 6 control lever 2 22; Up together with upper valve rod 7; Locking mechanism between upper valve rod 7 and the lower valve rod 8 is opened simultaneously, and second sampling tube 6 is closed thereupon, accomplishes sampling.The mechanism of action of the 3rd sampling tube 6 is the same.Therefore, closed as long as first sampling tube 6 takes place, will trigger the clutch 9 that is attached thereto, impel a plurality of sampling tubes 6 closed simultaneously, the high pressure property medium promptly is sealed in the sampling tube 6, then whole sampler is tripped out, and accomplishes sampling process.
Claims (4)
1. electric-controlled type high pressure physical property sample system, it is characterized in that: this device comprises computer (1), interface box (2) and sampler, and interface box (2) one ends are connected with computer (1) through cable, and the other end links to each other with sampler through cable; Wherein, Sampler comprise cable seal device (3) and with its medium survey meter (4) that is connected successively, electric controller (5) and sampling tube (6); The both ends open place of sampling tube (6) be equipped with respectively can the shutoff opening upper valve rod (7) and lower valve rod (8); Upper valve rod (7) is connected through the opposite spring of active force with sampling tube (6) inwall respectively with lower valve rod (8), and between upper valve rod (7) and the lower valve rod (8) locking mechanism is housed; Electric controller (5) comprises motor (10), leading screw (11) and screw (12); Control circuit (13) is arranged on the motor (10); The output of motor (10) is connected with leading screw (11); Screw (12) one ends are sleeved on the leading screw (11), and the other end is connected with upper valve rod (7) through position-limit mechanism; Control circuit (13) links to each other with interface box (2) through cable respectively with medium survey meter (4);
Described locking mechanism comprises sliding sleeve (14) and fixed cover one (15), and wherein, sliding sleeve (14) and lower valve rod (8) are affixed, and lower valve rod (8) inwall has outwards outstanding oblique shoulder; Sliding sleeve (14) internal sleeve is equipped with fixed cover one (15), and fixed cover one (15) is affixed with sampling tube (6), and between the end of fixed cover one (15) and sliding sleeve (14) spring is housed, and fixed cover one (15) end has fluid passage; Fixed cover one (15) has open-work on the two side that is positioned at sliding sleeve (14) inside, be equipped with steel ball (16a) in the open-work respectively; Upper valve rod (7) places in the fixed cover one (15) and there is oblique step the end;
Described position-limit mechanism comprises securing rod (17), fixed cover two (18) and control lever one (19), and wherein, securing rod (17) one ends and screw (12) are affixed, and the oblique shoulder that caves inward is arranged on the other end inwall; Be set with fixed cover two (18) in the securing rod (17), fixed cover two (18) is affixed with electric controller (5) outer wall, has open-work on the two side of fixed cover two (18), is equipped with steel ball (16b) in the open-work respectively; Control lever one (19) one end is sleeved in the fixed cover two (18) and there is oblique step the end, and the other end contacts with upper valve rod (7).
2. according to the described electric-controlled type high pressure physical property sample system of claim 1, it is characterized in that: described sampling tube (6) is for a plurality of, and adjacent sampling tube (6) is connected through clutch (9).
3. according to the described electric-controlled type high pressure physical property sample system of claim 2; It is characterized in that: described clutch (9) comprises fixed cover three (20), frizzen (21) and control lever two (22); Wherein, The two ends of fixed cover three (20) connect sampling tube (6) respectively, and fluted on the inwall of fixed cover three (20); One end of control lever two (22) is positioned at fixed cover three (20), and has open-work on the two side, is equipped with steel ball (16c) in the open-work respectively, and the other end then contacts with the upper valve rod (7) of next sampling tube (6); One end of frizzen (21) contacts with lower valve rod (8) in the last sampling tube (6), and an end is sleeved in the control lever two (22) and there is oblique step the end.
4. according to the described electric-controlled type high pressure physical property sample system of claim 3, it is characterized in that: described sampling tube (6) is 2～3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200598740U CN202467833U (en) | 2012-02-23 | 2012-02-23 | Electrically controlled high-pressure physical property sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200598740U CN202467833U (en) | 2012-02-23 | 2012-02-23 | Electrically controlled high-pressure physical property sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467833U true CN202467833U (en) | 2012-10-03 |
Family
ID=46915998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200598740U Withdrawn - After Issue CN202467833U (en) | 2012-02-23 | 2012-02-23 | Electrically controlled high-pressure physical property sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467833U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562054A (en) * | 2012-02-23 | 2012-07-11 | 大庆赛恩思电子仪器设备有限公司 | Electronic-control high-pressure physical-property sampling system |
| GB2546390A (en) * | 2015-12-17 | 2017-07-19 | Schlumberger Technology Bv | Double rod lock system |
| US10669847B2 (en) | 2015-12-17 | 2020-06-02 | Schlumberger Technology Corporation | Double Rod Lock System |
-
2012
- 2012-02-23 CN CN2012200598740U patent/CN202467833U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562054A (en) * | 2012-02-23 | 2012-07-11 | 大庆赛恩思电子仪器设备有限公司 | Electronic-control high-pressure physical-property sampling system |
| CN102562054B (en) * | 2012-02-23 | 2014-08-27 | 大庆赛恩思电子仪器设备有限公司 | Electronic-control high-pressure physical-property sampling system |
| GB2546390A (en) * | 2015-12-17 | 2017-07-19 | Schlumberger Technology Bv | Double rod lock system |
| GB2546390B (en) * | 2015-12-17 | 2020-04-22 | Schlumberger Technology Bv | Double rod lock system |
| US10669847B2 (en) | 2015-12-17 | 2020-06-02 | Schlumberger Technology Corporation | Double Rod Lock System |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20140827 |
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| RGAV | Abandon patent right to avoid regrant |