CN103758514B - A kind of core for side-wall core extractor is distinguished and memory structure - Google Patents
A kind of core for side-wall core extractor is distinguished and memory structure Download PDFInfo
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- CN103758514B CN103758514B CN201410028730.2A CN201410028730A CN103758514B CN 103758514 B CN103758514 B CN 103758514B CN 201410028730 A CN201410028730 A CN 201410028730A CN 103758514 B CN103758514 B CN 103758514B
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Abstract
The invention discloses a kind of core for side-wall core extractor and distinguish and memory structure, comprise core tube, the core that core tube gathers for storing side-wall core extractor; Spacer element, spacer element is arranged on the port of core tube, and spacer element is used to core tube that the partition of distinguishing different layers position is provided, and described spacer element is for putting the arrival end to core tube by partition; Push away core assembly, push away the port bearing of trend setting of core assembly along core tube, push away core assembly for core and partition are pushed into core tube inside; Control survey circuit, control survey circuit is used for controlling spacer element and pushes away core assembly action, and measures the length of rock core. The present invention can be applicable in side-wall core extractor, application the present invention can be able to improve the accuracy that core is distinguished, can reduce operation engineer's the mistake section of sentencing brought of empirical data, can distinguish by physics mode the core of different layers position, can arbitrary layer of position of Real-Time Monitoring get core length, can realize the optimal control of getting core operation.
Description
Technical field
The present invention relates to side-wall core extractor, especially a kind of core for side-wall core extractor is distinguished and is storedStructure.
Background technology
In petroleum exploration and development process, drilling well is to find the most basic method of underground oil and gas storage.Therefore, petroleum exploration and development company has dropped into a large amount of manpower and financial resources, carries out drilling well work. For reallyCharacter and the oil-gas possibility of determining stratum, developed Log Methods, measures stratum along borehole axisElectrically, the parameter such as physical property, then pass through engineer's research and analysis, final decision formation characteristics, whetherOily characteristic. In the exploration process of oil gas field, this method is called as " the indirect identification method of oil reservoir ",There are many artificial factors in this method, often can get the wrong sow by the ear. Another kind method is to boreIn well process, utilize core bit repeatedly to get core to formation at target locations, and then directly determine the rock on stratumProperty, physical property and oil-gas possibility. But the method not only poor in timeliness, expense is high, and very risky,Especially, during at sea with deep drilling, this shortcoming is more outstanding.
In order to overcome this shortcoming, developed in recent years side-wall coring method, the method is getting core with cableUnder instrument, to down-hole, and navigate to formation at target locations the borehole wall is got to core. In concrete operations, side-wall coringInstrument at the scene coring is once gone into the well and can coring quantity be reached 60, and measures dress by means of corePut, add operation engineer's experience, and then judge that different cores belongs to the core of that layer of position.But, in current side-wall coring device, not having the physical areas separating device between core, can not judgeWhich layer position core belongs to, and simultaneously rule of thumb data are carried out corresponding decision operation and existed again certain blindOrder; The as easy as rolling off a log judgement that makes a mistake, be usually subject to Party A's query. Meanwhile, getting in core process,Can not Real-Time Monitoring stratum get core length, as easy as rolling off a log generation is found a certain after coring apparatus device proposes well headLayer position do not complete corresponding coring, does for this situation core of getting carrying out again that need repeat to go into the wellIndustry, coring efficiency is lower.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of core for side-wall core extractor and distinguishes and store knotStructure, can improve the accuracy that core is distinguished, and can reduce operation engineer's the mistake brought of empirical dataErroneous judgement section, can distinguish by physics mode the core of different layers position, can arbitrary layer of position of Real-Time MonitoringGet core length, can realize the optimal control of getting core operation.
For solving the problems of the technologies described above, the invention provides that a kind of core for side-wall core extractor is distinguished andMemory structure, described core is distinguished and memory structure is arranged on side-wall core extractor inside, it is characterized in that,Described core is distinguished and memory structure comprises
Core tube, the core that described core tube gathers for storing side-wall core extractor;
Spacer element, described spacer element is arranged on the port of described core tube, and described spacer element is used forFor described core tube provides the partition of distinguishing different layers position, described spacer element is for putting described partition extremelyThe arrival end of described core tube;
Push away core assembly, described in push away the port bearing of trend setting of core assembly along described core tube, described in push away coreAssembly is for being pushed into described core tube inside by core and described partition; And
Control survey circuit, described control survey circuit be used for controlling described spacer element with described in push away core groupPart moves, and measures the length of rock core.
Above-mentioned core is distinguished and memory structure also can have following features, also comprises
Detection components, described detection components is arranged in the barrel of described core tube, and near port setting;Described detection components is sent into situation for detection of the core packing in described core tube, and detection signal is defeatedGive control survey circuit.
Above-mentioned core is distinguished and memory structure also can have following features,
Described spacer element comprises partition, partition storage tank, partition baffle plate, partition Compress Spring and swingArm;
Described partition is arranged in described partition storage tank;
Described partition baffle plate is arranged on described partition storage tank port, described partition baffle plate be used for limiting described everySheet ejects described partition storage tank;
Described partition Compress Spring is arranged on described partition storage tank bottom, and described partition Compress Spring is for propping upSupport described partition;
Described swing arm is arranged between described partition baffle plate and described partition storage tank port, described swing armFor the arrival end to described core tube by described partition pendulum.
Above-mentioned core is distinguished and memory structure also can have following features,
Described detection components comprises piston, piston storage tank, magnet, piston compression spring and hall device;
Described piston is arranged in described piston storage tank, and described piston one end extends to described core tube inside;
Described magnet is arranged on the other end of described piston;
Described hall device is arranged on the bottom of described piston storage tank;
Described piston compression spring is arranged between described magnet and described hall device.
Above-mentioned core is distinguished and memory structure also can have following features, also comprises
Displacement transducer, pushes away in core assembly described in described displacement transducer arranges, and described displacement transducer is usedIn the promotion length that pushes away core assembly described in detection;
Described control survey circuit, according to the detection signal of described detection components, is controlled described displacement transducerGather displacement signal.
Above-mentioned core is distinguished and memory structure also can have following features,
Described swing arm is provided with the semicircle groove corresponding with described partition diameter, and described swing arm passes throughSwing hydraulic pressure axle is rocked to the partition in described semicircle groove the arrival end of described core tube.
Technique scheme of the present invention has following beneficial effect:
The present invention includes core tube, the core that core tube gathers for storing side-wall core extractor; Spacer element,Spacer element is arranged on the port of core tube, and spacer element is used to core tube to provide and distinguishes different layers positionPartition, spacer element is for putting the arrival end to core tube by partition; Push away core assembly, push away core assembly along rockThe port bearing of trend of core cylinder arranges, and pushes away core assembly for core and partition are pushed into core tube inside;And control survey circuit, control survey circuit is used for controlling spacer element and pushes away core assembly action. Pass throughSaid modules can improve the accuracy that core is distinguished, and can reduce operation engineer's empirical data and bringThe mistake section of sentencing, can distinguish by physics mode the core of different layers position.
Further, the present invention is by detection components is set, and detection components is arranged in the barrel of core tube,And near port setting; Detection components is sent into situation for detection of the core packing in core tube, and will examineSurvey signal and flow to control survey circuit; That can realize arbitrary layer of position of Real-Time Monitoring gets core length, canThe optimal control of core operation is got in realization.
Other features and advantages of the present invention will be set forth in the following description, and, partly fromIn bright book, become apparent, or understand by implementing the present invention. Object of the present invention is excellent with otherPoint can be realized and be obtained by specifically noted structure in description, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used to provide the further understanding to technical solution of the present invention, and forms of descriptionPoint, be used from and explain technical scheme of the present invention with the application's embodiment mono-, do not form the present inventionThe restriction of technical scheme.
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structure cutaway view of the embodiment of the present invention;
Fig. 3 is the structural perspective of the embodiment of the present invention
Fig. 4 is the structural representation of embodiment of the present invention spacer element;
Fig. 5 is the structural representation of embodiment of the present invention detection components.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawingEmbodiments of the invention are elaborated. It should be noted that, in the situation that not conflicting, this ShenPlease in embodiment and the feature in embodiment can mutually be combined.
The invention provides a kind of core for side-wall core extractor and distinguish and memory structure, core distinguish andMemory structure is arranged on side-wall core extractor inside, and shown in Fig. 1, Fig. 2 and Fig. 3, core is distinguishedAnd memory structure can comprise
Core tube 9, the core 3 that core tube 9 gathers for storing side-wall core extractor;
Spacer element, spacer element is arranged on the port of core tube 9, and spacer element is used to core tube 9The partition 6 of distinguishing different layers position is provided, and spacer element is for putting partition 6 to the arrival end of core tube 9;
Push away core assembly 2, push away the port bearing of trend setting of core assembly 2 along core tube 9, push away core assembly 2For core 3 and partition 6 are pushed into core tube 9 inside; And
Control survey circuit, control survey circuit is used for controlling spacer element and pushes away core assembly 2 and move.
Preferably, send into the detection of situation in order to realize the core 3 packing in core tube 9; ThisIn bright concrete operations, can be provided with detection components, detection components is arranged in the barrel of core tube 9,And near port setting; Detection components is sent into situation for detection of the core packing in core tube 9, and willDetection signal flows to control survey circuit.
Preferably, as shown in Figure 5, in concrete operations of the present invention, spacer element can be by following concreteStructure realizes:
Spacer element can comprise partition 6, partition storage tank, partition baffle plate 4, partition Compress Spring 7 withAnd swing arm 8;
Partition is arranged in partition storage tank;
Partition baffle plate 4 is arranged on partition storage tank port, and partition baffle plate 4 ejects partition for limiting partition 6Storage tank;
Partition Compress Spring 7 is arranged on partition storage tank bottom, and partition Compress Spring 7 is for supporting partition;
Swing arm 8 is arranged between partition baffle plate 4 and partition storage tank port, and swing arm 8 is for by partitionPut to the arrival end of core tube 9.
Preferably, as shown in Figure 5, in concrete operations of the present invention, detection components can be by following concreteStructure realizes:
Detection components can comprise piston 5-1, piston storage tank, magnet 5-2, piston compression spring 5-3And hall device 5-4;
Piston 5-1 is arranged in piston storage tank, and piston 5-1 one end extends to core tube 9 inside;
Magnet 5-2 is arranged on the other end of piston 5-1;
Hall device 5-4 is arranged on the bottom of piston storage tank;
Piston compression spring 5-3 is arranged between magnet 5-2 and hall device 5-4.
Preferably, in order to coordinate and realize the real-time prison of getting core length of arbitrary layer of position with detection componentsSurvey; In concrete operations of the present invention, can be provided with displacement transducer 1, displacement transducer 1 arranges and pushes away coreIn assembly 2, displacement transducer 1 is for detection of the promotion length that pushes away core assembly 2;
Control survey circuit is according to the detection signal of detection components, and control bit displacement sensor 1 gathers displacement letterNumber; It should be noted that, those skilled in the art can select corresponding control to survey according to actual conditionsAmount circuit, as PLC programmable logic controller (PLC) etc.; Accordingly, generate corresponding moving according to detection signalThe specific implementation of making signal is those skilled in the art's conventional techniques means, its signal specific implementation processRepeat no more herein.
Preferably, in order to improve the degree of agreeing with in swing arm 8 swing process and between partition 6, thisIn bright concrete operations, swing arm 8 can be provided with the semicircle groove corresponding with partition 6 diameters, swingsArm 8 is rocked to the partition in semicircle groove 6 by swing hydraulic pressure axle 10 arrival end of core tube 9.
Preferably, in concrete operations of the present invention, push away core assembly 2 and can comprise and push away core bar.
Preferably, in concrete operations of the present invention, can adopt following technical scheme to be achieved:
When borehole wall coring instrument completes and gets after core in down-hole, as shown in Figure 4, Fig. 4 is the B-B in Fig. 2Direction view, swing hydraulic pressure axle 10 drives swing arm 8 that one is about to be swung in core tube 9Partition 6 is swinging in core tube 9, then swing hydraulic pressure axle 10 stop motions; The partition 6 being swung inOn can have numbering, be used for separating the core of different layers position.
And then, push away core bar under hydraulic oil effect, to core tube 9 directions motions, moved pushing away core barCheng Zhong, is arranged on the displacement transducer 1 that pushes away core bar inside and can accurately detects the movement position that pushes away core bar.Pushing away core bar promotion core moves to core tube 9; When core enters in core tube 9, can be together firm pendulumThe partition entering is pushed in core tube 9, detection components action simultaneously.
In the time that core enters core tube 9, the piston 5-1 that core promotes detection components moves upward, pistonThe active force that 5-1 overcomes piston compression spring 5-3 with moving magnet 5-2 moves upward together, hall device5-4, under magnet 5-2 effect, makes Hall switch closure, and detection signal is passed to control survey electricityRoad;
Control survey circuit can judge that according to this detection signal current core has arrived detection components position,Now to detect the position that now pushes away core bar be L1 to control survey circuit control bit displacement sensor 1; Work as rockCore is through after detection components, and piston and magnet are under piston compression spring 5-3 effect, to core tube 9Inner chamber motion, now hall device 5-4 disconnects; Control survey circuit is according to this cut-off signal control displacementIt is L2 that sensor 1 detects the position that now pushes away core bar, and position L2-L1 can obtain current obtainingThe length of core;
Afterwards, push away core bar and return action under hydraulic oil effect, and control swing hydraulic pressure axle 10 and putGet back to initial position; Meanwhile, partition is under the effect of partition Compress Spring 7, and partition is to partition baffle plate 4Direction motion, under the effect of partition Compress Spring 7, is adjacent to partition baffle plate 4, for the next one insertsThe action of partition is ready, ready for distinguishing next core.
Technique scheme provided by the invention can be at tens cores of down-hole repeated obtain, at every rockBetween core, swing in respectively a partition by controlling swing hydraulic pressure axle, the corresponding numbering on partition, canBe used for distinguishing the core of different layers position; Simultaneous displacement sensor coordinates with core switch, can detectThe length of institute's coring; When random layer position to get core length undesirable or do not complete while getting core, dark at thisDegree layer position can be carried out coring again, can effectively avoid instrument to propose well head and find that certain one deck position does not haveThere is coring, the situation generation that need to repeat goes into the well gets core.
Technique scheme provided by the invention can be utilized the oscillating motion of rotating liquid cylinder pressure, and partition is putEnter in core tube, make to carry out physical isolation between core and core, reach the object of accurate differentiation core;Can measure the displacement transducer that pushes away core bar position and coordinate with core switch, can accurately measure got rockThe length of core; Meanwhile, technique scheme structure composition provided by the invention rationally, is easy to popularization and realExecute.
Although it is apparent to those skilled in the art that the disclosed embodiment of the present invention as above, instituteThe embodiment that the content of stating only adopts for ease of understanding the present invention, not in order to limit the present invention. AppointThose of skill in the art under what the present invention, do not depart from the disclosed spirit and scope of the present invention beforePut, can in the form of implementing and details, carry out any amendment and variation, but patent of the present inventionProtection domain, still must be as the criterion with the scope that appending claims was defined.
Claims (4)
1. distinguish and a memory structure for the core of side-wall core extractor, knot is distinguished and stored to described coreStructure is arranged on side-wall core extractor inside, it is characterized in that, described core is distinguished and memory structure comprises
Core tube, the core that described core tube gathers for storing side-wall core extractor;
Spacer element, described spacer element is arranged on the port of described core tube, and described spacer element is used forFor described core tube provides the partition of distinguishing different layers position, described spacer element is for putting described partition extremelyThe arrival end of described core tube;
Push away core assembly, described in push away the port bearing of trend setting of core assembly along described core tube, described in push away coreAssembly is for being pushed into described core tube inside by core and described partition; And
Control survey circuit, described control survey circuit be used for controlling described spacer element with described in push away core groupPart moves, and measures the length of rock core;
Detection components, described detection components is arranged in the barrel of described core tube, and near port setting;Described detection components is sent into situation for detection of the core packing in described core tube, and detection signal is defeatedGive control survey circuit;
Described detection components comprises piston, piston storage tank, magnet, piston compression spring and hall device;Described piston is arranged in described piston storage tank, and described piston one end extends to described core tube inside; InstituteState the other end that magnet is arranged on described piston; Described hall device is arranged on the bottom of described piston storage tank;Described piston compression spring is arranged between described magnet and described hall device.
2. core according to claim 1 is distinguished and memory structure, it is characterized in that described partitionAssembly comprises partition, partition storage tank, partition baffle plate, partition Compress Spring and swing arm;
Described partition is arranged in described partition storage tank;
Described partition baffle plate is arranged on described partition storage tank port, described partition baffle plate be used for limiting described everySheet ejects described partition storage tank;
Described partition Compress Spring is arranged on described partition storage tank bottom, and described partition Compress Spring is for propping upSupport described partition;
Described swing arm is arranged between described partition baffle plate and described partition storage tank port, described swing armFor the arrival end to described core tube by described partition pendulum.
3. core according to claim 1 is distinguished and memory structure, it is characterized in that, also comprises
Displacement transducer, pushes away in core assembly described in described displacement transducer arranges, and described displacement transducer is usedIn the promotion length that pushes away core assembly described in detection;
Described control survey circuit, according to the detection signal of described detection components, is controlled described displacement transducerGather displacement signal.
4. core according to claim 2 is distinguished and memory structure, it is characterized in that described swingArm is provided with the semicircle groove corresponding with described partition diameter, and described swing arm passes through swing hydraulic pressure axle willPartition in described semicircle groove is rocked to the arrival end of described core tube.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2761421C1 (en) * | 2019-09-23 | 2021-12-08 | Чайна Ойлфилд Сервисез Лимитед | Device for determining the oil level in a well |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104775782B (en) * | 2015-02-06 | 2018-04-17 | 中国海洋石油总公司 | A kind of cleaning structure of side-wall core extractor |
| CN106285669A (en) * | 2016-10-01 | 2017-01-04 | 北京捷威思特科技有限公司 | Slim-hole bulky grain mechanical type well bore sidewall core taker |
| CN108106529B (en) * | 2017-11-18 | 2019-11-22 | 中国石油天然气集团公司 | A kind of memory type measurement while drilling rock core length device and system |
| CN117759221B (en) * | 2024-02-21 | 2024-05-03 | 中海油田服务股份有限公司 | Downhole rotating well wall coring control method and system |
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| US7500388B2 (en) * | 2005-12-15 | 2009-03-10 | Schlumberger Technology Corporation | Method and apparatus for in-situ side-wall core sample analysis |
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| US7748265B2 (en) * | 2006-09-18 | 2010-07-06 | Schlumberger Technology Corporation | Obtaining and evaluating downhole samples with a coring tool |
| CN101424170A (en) * | 2007-11-02 | 2009-05-06 | 普拉德研究及开发股份有限公司 | Coring tool, core convey assembly and core convey method |
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| RU2761421C1 (en) * | 2019-09-23 | 2021-12-08 | Чайна Ойлфилд Сервисез Лимитед | Device for determining the oil level in a well |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
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