CN202215237U - Communicating vessel type well kick leakage qualitative monitor - Google Patents
Communicating vessel type well kick leakage qualitative monitor Download PDFInfo
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- CN202215237U CN202215237U CN2011200409392U CN201120040939U CN202215237U CN 202215237 U CN202215237 U CN 202215237U CN 2011200409392 U CN2011200409392 U CN 2011200409392U CN 201120040939 U CN201120040939 U CN 201120040939U CN 202215237 U CN202215237 U CN 202215237U
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Abstract
The utility model relates to a well kick leakage monitor which indicates the petroleum drilling process. In a communicating vessel type well kick leakage qualitative monitor, an inlet flow sensor and a special liquid level sensor are connected with an input signal acquisition port of a programmable logic controller (PLC) in parallel, an acousto-optical prewarning alarm is connected to the output port of the PLC, the PLC is connected with an industrial personal computer through a serial port, the inlet flow sensor is installed on a horizontally-arranged pipeline which is between a slurry pump and a vertical pipe, a hole is arranged in the side wall of a bellmouth type sleeve which is between a wellhead blowout preventer and an overflow port of a backlash groove, an air and sedimentation-resistant arc base is installed, a meter tube is inserted into the arc base vertically from top to bottom, and the special liquid level sensor is tightly screwed with the upper end of the meter tube. During the well drilling process, the PLC and the industrial personal computer timely detect and analyze the signals of the special liquid level sensor and the inlet flow sensor, the slight variation of the flowing slurry can be timely, accurately, stably and reliably monitored whenever the slurry is static or circularly flows, so whether the well kick leakage occurs is qualitatively judged at the earlier possible time.
Description
Technical field
The utility model belongs to the petroleum drilling engineering technical field, relates to a kind of monitor of indicating well kick leakage in the Process of Oil Well Drilling, and whether especially can qualitatively judge in the very first time has the well kick leakage to take place.
Background technology
In petroleum exploration and development and drilling process, timely, accurate, as to stablize, monitor reliably mud flow state is the prerequisite whether analysis and judgement has the well kick leakage.Well kick and leakage have tiny variation at its formation initial stage; Well kick leakage monitoring most critical is most important to gush the very first time these tiny variations of discovery and the timely early warning and alarming that leaks generation exactly; Race against time for removing a hidden danger, creeping into for safety provides reliable guarantee.
At present; Well kick leakage monitoring method commonly used both at home and abroad mainly contains two types: the one, on overhead backflash, use detection instruments such as duck tongue plate flow meter or ultrasonic liquid leveller; Its principle is through the detection to mud liquid level in the overhead backflash, and whether analysis and judgement has the well kick leakage to take place; The 2nd, on the mud circulation jar through mud liquid level variation in the artificial interval measurement mud circulation jar; Or through the variation that detection instruments such as float-ball type content gauge, ultrasonic liquid leveller are measured mud level in the mud circulation jar is installed; Derive the variation of mud side's amount, whether have the well kick leakage to take place with this analysis and judgement.In actual use; More than two kinds of methods all can not the very first time in time, accurately, stable, judge whether that the well kick leakage takes place reliably; Reason is that the density, viscosity, temperature, flow velocity of mud in (1) backflash etc. is all with creeping into and constantly change; And the silt drilling cuttings that contains in the mud makes the flow regime of mud become multiphase flow, and duck tongue plate flow meter or ultrasonic liquid leveller can't be accomplished reliablely and stablely to measure under complex environment like this.(2) common requirement both at home and abroad is to gush leakage quantity to exceed the just necessary early warning and alarming of normal value 1～2 side; And 1～2 side's variable quantity is reflected in and on the liquid level of backflash 1 millimeter variation is only arranged, and the liquid level that duck tongue plate flow meter or ultrasonic liquid leveller can't accurately detect backflash is small variable quantity so.(3) to the monitoring of well kick leakage, should judge whether qualitatively in time that at first the abnormal conditions of well kick leakage take place, next is only the degree of accurate metering, quantitative analysis well kick leakage.On the mud circulation jar; No matter be to adopt artificial interval measurement also to be to use float-ball type content gauge or ultrasonic liquid leveller to measure the variation of mud level side's amount in the mud circulation jar; All be whether the accumulation that will measure by the time acquires a certain degree and infer to have to gush again and leak unusual the generation; Promptly be a kind of quantitative analysis and judgement method, whether have the well kick leakage to take place so can not qualitatively judge in the very first time.
Summary of the invention
In order to overcome all deficiencies that prior art and product exist, the utility model provide a kind of ability in time, accurately, stable, monitor the mud flow state reliably, especially can qualitatively judge the monitor that whether have the well kick leakage to take place in the very first time.
The utility model solves the technical scheme that its technical problem adopted:
The qualitative monitor of a kind of connected vessels type well kick leakage; The parallel input signal that is connected to PLC of inlet flow rate sensor and special-purpose liquid level sensor is gathered port; The acousto-optic intelligent warning alarm is connected to the output port of PLC; PLC is connected with Industrial Personal Computer (IPC) through serial ports, and the import flow transmitter is installed on the horizontal pipeline between slush pump and the standpipe, on the sidewall of the horn mouth sleeve pipe between wellhead blowout preventor and the backflash overfall, opens a hole; The anti-alluvial of anti-vapour lock arc-shaped base is installed; Measuring tube vertically inserts arc-shaped base from top to bottom, and special-purpose liquid level sensor and measuring tube upper end closely are spirally connected, and PLC and Industrial Personal Computer (IPC) are to the timely check and analysis of signal of special-purpose liquid level sensor and inlet flow rate sensor; Whether the mud liquid level rate of change at very first time analysis and judgement drill bushing annular space is consistent with the rate of change of import mud flow rate, exceeds the normal value audible-visual annunciator and sends sound and light alarm.
The optimum position that said arc-shaped base is installed is on the sidewall with the corresponding horn mouth sleeve pipe in backflash overfall base, and makes the perforate on the sidewall consistent with the opening maintenance bore of arc-shaped base.
Fixedly short circuit directly over the arc-shaped base and the retaining ring on the measuring tube closely are spirally connected; Measuring tube after fixing is parallel with the horn mouth sleeve pipe; The steam vent of measuring tube upper end must be higher than the top of backflash overfall simultaneously, and the lower end of measuring tube is suspended in the centre of the anti-alluvial of the anti-vapour lock of arc-shaped base cavity.
The qualitative monitor of described connected vessels type well kick leakage; Measuring tube and horn mouth sleeve pipe form U type linker through arc-shaped base; Measuring tube upper end steam vent is discharged the gas in the arc cavity, makes the increase and decrease that keeps consistency of mud liquid level and the mud liquid level in the drill bushing annular space in the measuring tube.
The measuring tube of the qualitative monitor of described connected vessels type well kick leakage; The length of measuring tube is greater than the bore of backflash overfall; The external diameter of measuring tube is advisable with 30mm-50mm; The upper end of measuring tube is with outer silk, has steam vent below outer, is with the retaining ring of outer silk near one of the outside weldings of lower end.
The arc-shaped base of the qualitative monitor of described connected vessels type well kick leakage, the hollow hemisphere that structure and shape approximation are vertically cut open dissects the diameter of the bore of mouth less than the horn mouth sleeve pipe; Dissecing mouth docks with the perforate on the horn mouth sleeve pipe sidewall is identical; There is hollow arc cavity base inside, and base exterior is top-down arc body, the middle hole of opening directly over the arc body; The fixedly short circuit of a cover internal thread is installed, and fixedly the retaining ring of short circuit and measuring tube closely is spirally connected.
The qualitative monitor of described connected vessels type well kick leakage, special-purpose liquid level sensor is the stainless steel cylindrical tube, the upper end inwall had screw thread when stainless steel cylinder was erect; Be spirally connected successively from bottom to top seal cover and top cover have boss on the top cover, the external diameter of boss is identical with the external diameter of stainless steel cylinder; Have a side opening below the inwall screw thread of stainless steel cylinder upper end, multi-core socket is installed, the bottom inwall of stainless steel cylinder has screw thread and tubaeform base to be spirally connected; The outside of tubaeform base is the different but concentric hollow cylinder that connect successively of following three external diameters in last, and the cylindrical external diameter in lower end is identical with the external diameter of stainless steel cylinder, and the external diameter of mediate cylindrical is identical with the internal diameter of stainless steel cylinder and be with screw thread; The two closely is spirally connected, and the cylindrical external diameter in upper end is slightly less than the external diameter of mediate cylindrical, and the upper end cylinder has outer silk to be spirally connected with the wiring board pallet topmost; The external diameter of wiring board pallet is slightly less than the internal diameter of stainless steel cylinder, and after wiring board was fixed on the pallet, its top will be lower than the bottom of the multi-core socket on the stainless steel cylinder sidewall; Three parts under during the inside of tubaeform base also is divided into, the bottom is the straight section that is with internal thread, the internal diameter of straight section is identical with the external diameter of measuring tube; The two closely is spirally connected, and mid portion is tubaeform section, and it is identical with the internal diameter of measuring tube that the typhon mouth is connecting its bore of straight section; The toy trumpet mouth is connecting venturi; Venturi is connecting the emission cavity on top, and the internal diameter of emission cavity is installed ultrasonic transmitter greater than the internal diameter of venturi in the emission cavity.
The operating principle of the utility model is: in the drilling process; Because the annular space volume in the horn mouth sleeve pipe between drilling rod and the sleeve pipe is fixed; When the inlet flow rate of the mud in the drilling well circulating system is stable or relatively stable; Drill bushing annulus liquid level in the horn mouth sleeve pipe also is stable or metastable, and the size of normal condition lower inlet flow is determining the height of annulus liquid level, and the two is linear.Whether have well kick leakage take place, promptly when annulus liquid level altitude rate and inlet flow rate rate of change are inconsistent, gush leakage exactly unusually according to this principle if can qualitatively judge.Because the size of the cross-sectional area of drill bushing annular space has only the 1/20-1/30 of formed liquid surface area when the mud normal circulation flows in the backflash; And the cross-sectional area in the measuring tube is merely 1/100 of drill bushing annular space cross-sectional area; Therefore; The increase and decrease that mud flow rate is tiny can't be measured in backflash, but in measuring tube, can clearly embody, thereby is caught exactly by special-purpose liquid level sensor.
The beneficial effect of the utility model:
In drilling process, no matter mud is static or circulates, can both be in time, accurately, stable, monitor the minor variations of mud flow reliably, especially at the initial stage that well kick and leakage form, the very first time qualitatively judges whether the generation of well kick leakage is arranged.
Description of drawings
Fig. 1 is the principle schematic of the utility model;
Fig. 2 is the direct-view figure of the measuring tube of the utility model;
(1), (2), (3), (4) are respectively the three-view diagram and the stereogram of arc-shaped base among Fig. 3;
Fig. 4 is the spare part assembling drawing of the special-purpose liquid level sensor of the utility model.
The specific embodiment
Embodiment one: referring to Fig. 1～Fig. 4.Present embodiment combines accompanying drawing that the technical scheme of the utility model is described further.
Fig. 1 is the principle schematic of the utility model.Label representes that implication is following among the figure: 1, slush pump, 2, slurry tank, 3, vibrosieve, 4, water tap, 5, standpipe, 6, preventer; 7, backflash, 8, sleeve pipe, 9, drilling rod, 10, drill bit, 11, overfall; 12, arc-shaped base, 13, measuring tube, 14, special-purpose liquid level sensor, 15, hydrophthalmia, 16 wells; 17, shaft bottom, 18, the inlet flow rate sensor, 19, PLC, 20, Industrial Personal Computer (IPC), 21, audible-visual annunciator.
In Fig. 1; The mud that slush pump 1 pumping slurry tank is 2 li; And pour into 9 li on the drilling rod that is connected on the water tap 4 to mud through standpipe 5 with the high pressure mode, be installed in the variation of the inlet flow rate sensor 18 monitoring import in real time mud flow rate on the horizontal pipeline between slush pump 1 and the standpipe 5.Under the high pressure effect, the mud that drilling rod is 9 li ejects from the hydrophthalmia 15 of drill bit 10, and mud is carrying the drilling cuttings in shaft bottom 17 from boring, and the annular space between bar 9 and the well 16 returns overfall 11 from bottom to top.When the mud liquid level was higher than the base of overfall 11, mud will pass through backflash 7 and flow to vibrosieve 3, and finally flowed back to slurry tank 2, and the mud in the drilling process so moves in circles.When the mud in shaft bottom 17 returns overfall 11, be installed in the arc-shaped base 12 on horn mouth sleeve pipe 8 sidewalls between preventer 6 and the overfall 11 and have mud.According to law of connected vessels; The measuring tube that inserts in the arc-shaped base 12 also has mud for 13 li; And the mud liquid level that measuring tube is 13 li can go up and down with the mud liquid level of drill bushing annular space jointly, is installed in the mud liquid level variation that special-purpose liquid level sensor 14 on the measuring tube 13 can real-time monitor 13 li of measuring tubes simultaneously.The timely check and analysis of signal of PLC 19 and 20 pairs of inlet flow rate sensors of Industrial Personal Computer (IPC) 18 and special-purpose liquid level sensor 14; Whether the mud liquid level rate of change at very first time analysis and judgement drill bushing annular space is consistent with the rate of change of import mud flow rate, just sends sound and light alarm by audible-visual annunciator 21 if exceed normal value.
Fig. 2 is the direct-view figure of the measuring tube 13 of the utility model: among the figure, 13-1 is the upper end screw thread, and 13-2 is a retaining ring, and 13-3 is a steam vent.
Fig. 3 is the stereogram and the three-view diagram of the arc-shaped base 12 of the utility model: among the figure, 12-1 is fixing short circuit, and 12-2 is the anti-arc cavity that deposits of anti-vapour lock, and 12-3 is a shape of a saddle interface.
In the drawings, shape of a saddle interface 12-3 closely is connected with perforate on horn mouth sleeve pipe 8 sidewalls, and measuring tube 13 vertically inserts arc-shaped base 12 from top to bottom, retaining ring 13-2 and fixedly short circuit 12 11 closely be spirally connected.When the mud liquid level in the drill bushing annular space was higher than the base of overfall 11, mud got into the anti-alluvial of anti-vapour lock arc cavity 12-2, also gets in the measuring tube 13 simultaneously.The effect of steam vent 13-3 is the gas of discharging in the anti-alluvial of the anti-vapour lock arc cavity 12-2, makes the increase and decrease that keeps consistency of mud liquid level and the mud liquid level in the drill bushing annular space of 13 li of measuring tubes.The effect of the anti-alluvial of anti-vapour lock arc cavity 12-2 is to make first arc of cavity prevent vapour lock, the anti-silt drilling cuttings alluvial of second arc of cavity.
Fig. 4 is the spare part assembling drawing of the special-purpose liquid level sensor 14 of the utility model.Among the figure: 14-1, stainless steel cylindrical tube, 14-2, upper end inwall screw thread, 14-3, seal cover, 14-4, top cover, 14-5, multi-core socket; 14-6, bottom inwall screw thread, the tubaeform base of 14-7,14-8, wiring board pallet, 14-9, straight section; 14 1 10, typhon mouth, 14-11, toy trumpet mouth, 14-12, venturi, 14-13, emission cavity; 14-14,, boss, 14-15, ultrasonic transmitter, 14-16, wiring board.
In the drawings, the upper end inwall screw thread 14-2 of stainless steel cylinder 14-1 be spirally connected successively from bottom to top seal cover 14-3 and top cover 14-4 wherein have boss 14-14 on the top cover 14-4; The external diameter of boss 14-14 is identical with the external diameter of stainless steel cylinder 14-1, has a side opening below the upper end inwall screw thread 14-2 of stainless steel cylinder 141, and multi-core socket 14-5 is installed; The bottom inwall of stainless steel cylinder 14-1 has screw thread 14-6 and tubaeform base 14-7 to be spirally connected, and the outside of tubaeform base 14-7 is the different but concentric hollow cylinder that connect successively of following three external diameters in last, and the cylindrical external diameter in lower end is identical with the external diameter of stainless steel cylinder 14-1; The internal diameter of the external diameter of mediate cylindrical and stainless steel cylinder 14-1 is identical and be with screw thread, and the two closely is spirally connected, and the cylindrical external diameter in upper end is slightly less than the external diameter of mediate cylindrical; The upper end cylinder has outer silk to be spirally connected with wiring board pallet 14-8 topmost; The external diameter of wiring board pallet 14-8 is slightly less than the internal diameter of stainless steel cylinder 14-1, and after wiring board 14-16 was fixed on the wiring board pallet 14-8, its top will be lower than the bottom of the multi-core socket 14-5 on the stainless steel cylinder 14-1 sidewall; Three parts under during the inside of tubaeform base 14-7 also is divided into; The bottom is the straight section 14-9 that is with internal thread, and the internal diameter of straight section 14-9 is identical with the external diameter of measuring tube 13, and the two closely is spirally connected; Mid portion is tubaeform section; Typhon mouth 14-10 is connecting straight section 14-9, and its bore is identical with the internal diameter of measuring tube 13, and toy trumpet mouth 14-11 is connecting venturi 14-12; Venturi 1412 is connecting the emission cavity 14-13 on top, and ultrasonic transmitter 14-15 is installed in the emission cavity 14-13.
Claims (7)
1. qualitative monitor of connected vessels type well kick leakage; The parallel input signal that is connected to PLC of inlet flow rate sensor and special-purpose liquid level sensor is gathered port; The acousto-optic intelligent warning alarm is connected to the output port of PLC; PLC is connected with Industrial Personal Computer (IPC) through serial ports, it is characterized in that: the import flow transmitter is installed on the horizontal pipeline between slush pump and the standpipe, on the sidewall of the horn mouth sleeve pipe between wellhead blowout preventor and the backflash overfall, is opened a hole; The anti-alluvial of anti-vapour lock arc-shaped base is installed; Measuring tube vertically inserts arc-shaped base from top to bottom, and special-purpose liquid level sensor and measuring tube upper end closely are spirally connected, and PLC and Industrial Personal Computer (IPC) are to the timely check and analysis of signal of special-purpose liquid level sensor and inlet flow rate sensor; Whether the mud liquid level rate of change at very first time analysis and judgement drill bushing annular space is consistent with the rate of change of import mud flow rate, exceeds the normal value audible-visual annunciator and sends sound and light alarm.
2. the qualitative monitor of connected vessels type well kick leakage according to claim 1; It is characterized in that: the optimum position that arc-shaped base is installed is on the sidewall with the corresponding horn mouth sleeve pipe in backflash overfall base, and makes the perforate on the sidewall consistent with the opening maintenance bore of arc-shaped base.
3. the qualitative monitor of connected vessels type well kick leakage according to claim 1; It is characterized in that: fixedly short circuit directly over the arc-shaped base and the retaining ring on the measuring tube closely are spirally connected; Measuring tube after fixing is parallel with the horn mouth sleeve pipe; The steam vent of measuring tube upper end must be higher than the top of backflash overfall, and the lower end of measuring tube is suspended in the centre of the anti-alluvial of the anti-vapour lock of arc-shaped base cavity.
4. the qualitative monitor of connected vessels type well kick leakage according to claim 1; It is characterized in that: measuring tube and horn mouth sleeve pipe form U type linker through arc-shaped base; Measuring tube upper end steam vent is discharged the gas in the arc cavity, makes the increase and decrease that keeps consistency of mud liquid level and the mud liquid level in the drill bushing annular space in the measuring tube.
5. the qualitative monitor of connected vessels type well kick leakage according to claim 3; It is characterized in that: the length of measuring tube is greater than the bore of backflash overfall; The external diameter of measuring tube is advisable with 30mm-50mm; The upper end of measuring tube is with outer silk, has steam vent below outer, is with the retaining ring of outer silk near one of the outside weldings of lower end.
6. the qualitative monitor of connected vessels type well kick leakage according to claim 4; It is characterized in that: the structure of arc-shaped base be shaped as the hollow hemisphere of vertically cutting open; Dissect the diameter of the bore of mouth less than the horn mouth sleeve pipe, dissect mouth and dock with the perforate on the horn mouth sleeve pipe sidewall is identical, there is hollow arc cavity base inside; Base exterior is top-down arc body; Open a hole in the middle of directly over the arc body, the fixedly short circuit of a cover internal thread is installed, fixedly the retaining ring of short circuit and measuring tube closely is spirally connected.
7. the qualitative monitor of connected vessels type well kick leakage according to claim 1 is characterized in that: special-purpose liquid level sensor is that stainless steel is cylindrical simplified, and the upper end inwall had screw thread when stainless steel cylinder was erect; Be spirally connected successively from bottom to top seal cover and top cover have boss on the top cover, the external diameter of boss is identical with the external diameter of stainless steel cylinder; Have a side opening below the inwall screw thread of stainless steel cylinder upper end, multi-core socket is installed, the bottom inwall of stainless steel cylinder has screw thread and tubaeform base to be spirally connected; The outside of tubaeform base is the different but concentric hollow cylinder that connect successively of following three external diameters in last, and the cylindrical external diameter in lower end is identical with the external diameter of stainless steel cylinder, and the external diameter of mediate cylindrical is identical with the internal diameter of stainless steel cylinder and be with screw thread; The two closely is spirally connected, and the cylindrical external diameter in upper end is slightly less than the external diameter of mediate cylindrical, and the upper end cylinder has outer silk to be spirally connected with the wiring board pallet topmost; The external diameter of wiring board pallet is slightly less than the internal diameter of stainless steel cylinder, and after wiring board was fixed on the pallet, its top will be lower than the bottom of the multi-core socket on the stainless steel cylinder sidewall; Three parts under during the inside of tubaeform base also is divided into, the bottom is the straight section that is with internal thread, the internal diameter of straight section is identical with the external diameter of measuring tube; The two closely is spirally connected, and mid portion is tubaeform section, and it is identical with the internal diameter of measuring tube that the typhon mouth is connecting its bore of straight section; The toy trumpet mouth is connecting venturi; Venturi is connecting the emission cavity on top, and the internal diameter of emission cavity is installed ultrasonic transmitter greater than the internal diameter of venturi in the emission cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200409392U CN202215237U (en) | 2011-02-18 | 2011-02-18 | Communicating vessel type well kick leakage qualitative monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200409392U CN202215237U (en) | 2011-02-18 | 2011-02-18 | Communicating vessel type well kick leakage qualitative monitor |
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| Publication Number | Publication Date |
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| CN202215237U true CN202215237U (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200409392U Expired - Lifetime CN202215237U (en) | 2011-02-18 | 2011-02-18 | Communicating vessel type well kick leakage qualitative monitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726834A (en) * | 2012-10-10 | 2014-04-16 | 北京格瑞迪斯石油技术有限公司 | Sustained casing pressure diagnosis device and method |
| CN104131810A (en) * | 2014-07-14 | 2014-11-05 | 中南大学 | Novel well leakage warning device and method |
| CN106014402A (en) * | 2016-07-25 | 2016-10-12 | 西南石油大学 | Packing medium measuring instrument for well wall deformation detection |
| CN106034391A (en) * | 2015-03-09 | 2016-10-19 | 中国石油集团长城钻探工程有限公司 | Circular circuit board mounting cylinder for oil logging instrument |
| CN108625805A (en) * | 2018-06-11 | 2018-10-09 | 西南石油大学 | A kind of under-well bi-directional flow electromagnetic measuring device and measuring method |
| CN109723430A (en) * | 2018-11-21 | 2019-05-07 | 长江大学 | A kind of well cementation leakage and well kick analytical equipment and analysis method for returning outflow monitoring curve based on annular space |
-
2011
- 2011-02-18 CN CN2011200409392U patent/CN202215237U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726834A (en) * | 2012-10-10 | 2014-04-16 | 北京格瑞迪斯石油技术有限公司 | Sustained casing pressure diagnosis device and method |
| CN104131810A (en) * | 2014-07-14 | 2014-11-05 | 中南大学 | Novel well leakage warning device and method |
| CN104131810B (en) * | 2014-07-14 | 2016-08-24 | 中南大学 | A kind of Novel well fails to report alarm device and method |
| CN106034391A (en) * | 2015-03-09 | 2016-10-19 | 中国石油集团长城钻探工程有限公司 | Circular circuit board mounting cylinder for oil logging instrument |
| CN106014402A (en) * | 2016-07-25 | 2016-10-12 | 西南石油大学 | Packing medium measuring instrument for well wall deformation detection |
| CN106014402B (en) * | 2016-07-25 | 2019-12-17 | 西南石油大学 | Filling medium measuring instrument for borehole wall deformation detection |
| CN108625805A (en) * | 2018-06-11 | 2018-10-09 | 西南石油大学 | A kind of under-well bi-directional flow electromagnetic measuring device and measuring method |
| CN109723430A (en) * | 2018-11-21 | 2019-05-07 | 长江大学 | A kind of well cementation leakage and well kick analytical equipment and analysis method for returning outflow monitoring curve based on annular space |
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Granted publication date: 20120509 |