CN103758514A - Rock core distinguishing and storing structure for side-wall coring instrument - Google Patents
Rock core distinguishing and storing structure for side-wall coring instrument Download PDFInfo
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- CN103758514A CN103758514A CN201410028730.2A CN201410028730A CN103758514A CN 103758514 A CN103758514 A CN 103758514A CN 201410028730 A CN201410028730 A CN 201410028730A CN 103758514 A CN103758514 A CN 103758514A
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Abstract
The invention discloses a rock core distinguishing and storing structure for a side-wall coring instrument. The rock core distinguishing and storing structure for the side-wall coring instrument comprises a rock core cylinder, a spacer assembly, a core pushing assembly and a control and measurement circuit, wherein the rock core cylinder is used for storing a rock core which is acquired by the side-wall coring instrument, the spacer assembly is arranged on a port of the rock core cylinder and is used for providing a spacer with different layers for the rock core cylinder and placing the spacer to the inlet end of the rock core cylinder, the core pushing assembly is arranged in the extending direction of the port of the rock core cylinder and is used for pushing the rock core and the spacer to the interior of the rock core cylinder, and the control and measurement circuit is used for controlling the spacer assembly and the core pushing assembly to act and measuring the length of the rock core. The rock core distinguishing and storing structure can be applied to the side-wall coring instrument. By the adoption of the rock core distinguishing and storing structure for the side-wall coring instrument, the rock core distinguishing accuracy can be improved, wrong judgment caused by empirical data of an operating engineer can be reduced, rock cores on different strata can be distinguished with a physical method, the lengths of obtained rock cores on any strata can be monitored in real time, and optimal control of core obtaining can be achieved.
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 memory structure.
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.In order to determine character and the oil-gas possibility on stratum, developed Log Methods, along borehole axis measure stratum electrically, the parameter such as physical property, then pass through engineer's research and analysis, final decision formation characteristics, oily characteristic whether.In the exploration process of oil gas field, this method is called as " the indirect identification method of oil reservoir ", and this method exists many artificial factors, often can get the wrong sow by the ear.Another kind method is in drilling process, utilizes core bit repeatedly to get core to formation at target locations, and then directly determines lithology, physical property and the oil-gas possibility on stratum.Yet the method not only poor in timeliness, expense is high, and very risky, during especially 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 be with cable under coring tool to down-hole, and navigate to formation at target locations the borehole wall got to core.In concrete operations, side-wall core extractor at the scene coring is once gone into the well and can coring quantity be reached 60, and by means of core measurement mechanism, adds operation engineer's experience, and then judge that different cores belongs to the core of that layer of position.But the physical areas separating device between core not in current side-wall coring device, can not judge which layer position core belongs to, rule of thumb data are carried out corresponding decision operation and are had again certain blindness simultaneously; The as easy as rolling off a log judgement that makes a mistake, be usually subject to Party A's query.Simultaneously, in getting core process, can not Real-Time Monitoring stratum get core length, as easy as rolling off a log generation proposes to find that certain one deck position does not complete corresponding coring after well head when coring apparatus device, for this situation, need repeat to go into the well and carry out coring again, 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 memory structure, can 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.
For solving the problems of the technologies described above, the invention provides a kind of core for side-wall core extractor and distinguish and memory structure, described core is distinguished and memory structure is arranged on side-wall core extractor inside, it is characterized in that, and 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 to described core tube that the partition of distinguishing different layers position is provided, and described spacer element is for the arrival end to described core tube by described partition pendulum;
Push away core assembly, described in push away core assembly along the port bearing of trend setting of described core tube, described in to push away core assembly inner for core and described partition being pushed into described core tube; And
Control survey circuit, described control survey circuit be used for controlling described spacer element with described in push away core assembly action, and measure 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 flowed to 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 swing arm;
Described partition is arranged in described partition storage tank;
Described partition baffle plate is arranged on described partition storage tank port, and described partition baffle plate is used for limiting described partition and ejects described partition storage tank;
Described partition Compress Spring is arranged on described partition storage tank bottom, and described partition Compress Spring is used for supporting described partition;
Described swing arm is arranged between described partition baffle plate and described partition storage tank port, and described swing arm is for 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 it is inner that described piston one end extends to described core tube;
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 for detection of the described promotion length that pushes away core assembly;
Described control survey circuit, according to the detection signal of described detection components, is controlled described displacement transducer and is gathered 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 is rocked to the partition in described semicircle groove by swing hydraulic pressure axle 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 that the partition of distinguishing different layers position is provided, and spacer element is for putting the arrival end to core tube by partition; Push away core assembly, push away core assembly along the port bearing of trend setting of core tube, push 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.By said modules, can improve the accuracy that core is distinguished, can reduce the mistake section of sentencing that operation engineer's empirical data is brought, can distinguish by physics mode the core of different layers position.
Further, the present invention is by arranging detection components, 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 detection signal is flowed to control survey circuit; That can realize arbitrary layer of position of Real-Time Monitoring gets core length, can realize the optimal control of getting core operation.
Other features and advantages of the present invention will be set forth in the following description, and, partly from manual, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in manual, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide the further understanding to technical solution of the present invention, and forms a part for manual, is used from explanation technical scheme of the present invention with the application's embodiment mono-, does not form the restriction to technical solution of the present invention.
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structure sectional 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.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can be combined mutually.
The invention provides a kind of core for side-wall core extractor and distinguish and memory structure, core is distinguished and memory structure is arranged on side-wall core extractor inside, and shown in Fig. 1, Fig. 2 and Fig. 3, core is distinguished and memory structure can comprise
Spacer element, spacer element is arranged on the port of core tube 9, and spacer element is used to core tube 9 that the 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 core assembly 2 along the port bearing of trend setting of core tube 9, push away core assembly 2 for 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 actions.
Preferably, in order to realize the core 3 packing in core tube 9, send into the detection of situation; In concrete operations of the present invention, 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 detection signal is flowed to control survey circuit.
Preferably, as shown in Figure 5, in concrete operations of the present invention, spacer element can realize by following concrete structure:
Spacer element can comprise partition 6, partition storage tank, partition baffle plate 4, partition Compress Spring 7 and 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 storage tank for limiting partition 6;
Partition Compress Spring 7 is arranged on partition storage tank bottom, and partition Compress Spring 7 is for supporting partition;
Preferably, as shown in Figure 5, in concrete operations of the present invention, detection components can realize by following concrete structure:
Detection components can comprise piston 5-1, piston storage tank, magnet 5-2, piston compression spring 5-3 and 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 Monitoring of getting core length of arbitrary layer of position with detection components; In concrete operations of the present invention, can be provided with displacement transducer 1, displacement transducer 1 arranges and pushes away in core assembly 2, and 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 signal; It should be noted that, those skilled in the art can select corresponding control survey circuit according to actual conditions, as PLC programmable logic controller (PLC) etc.; Accordingly, the specific implementation that generates corresponding actuating signal according to detection signal is those skilled in the art's conventional techniques means, and its signal specific implementation process repeats no more herein.
Preferably, in order to improve the degree of agreeing with in swing arm 8 swing process and between partition 6, in concrete operations of the present invention, swing arm 8 can be provided with the semicircle groove corresponding with partition 6 diameters, and swing arm 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 direction view in Fig. 2, and swing hydraulic pressure axle 10 drives swing arm 8 that a partition 6 that is about to be swung in core tube 9 is swinging in core tube 9, then swing hydraulic pressure axle 10 stop motions; On the partition 6 being swung in, can there is 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, in pushing away core bar motion process, be arranged on the displacement transducer 1 that pushes away core bar inside and can accurately detect the movement position that pushes away core bar.Push away core bar and promote core to core tube 9 motions; When core enters in core tube 9, can together the partition just having swung in be pushed in core tube 9 to detection components action simultaneously.
When core enters core tube 9, the piston 5-1 that core promotes detection components moves upward, the active force that piston 5-1 overcomes piston compression spring 5-3 with moving magnet 5-2 moves upward together, hall device 5-4 is under magnet 5-2 effect, make Hall switch closed, and detection signal is passed to control survey circuit;
Control survey circuit can judge that according to this detection signal current core has arrived detection components position, and now to detect the position that now pushes away core bar be L1 to control survey circuit control bit displacement sensor 1; When core is through after detection components, piston and magnet are under piston compression spring 5-3 effect, and to the inner chamber motion of core tube 9, now hall device 5-4 disconnects; It is L2 that control survey circuit detects according to this cut-off signal control bit displacement sensor 1 position that now pushes away core bar, and position L2-L1 can obtain the length of current obtained core;
Afterwards, push away core bar and return action under hydraulic oil effect, and control swing hydraulic pressure axle 10 and swing back initial position; Meanwhile, partition is under the effect of partition Compress Spring 7, and partition, to the 4 direction motions of partition baffle plate, under the effect of partition Compress Spring 7, is adjacent to partition baffle plate 4, and the action of inserting partition for the next one is ready, ready for distinguishing next core.
Technique scheme provided by the invention can be at tens cores of down-hole repeated obtain, between every core, by controlling swing hydraulic pressure axle, swing in respectively a partition, and the corresponding numbering on partition can be used for distinguishing the core of different layers position; Simultaneous displacement sensor coordinates with core switch, can detect the length of institute's coring; When random layer position to get core length undesirable or do not complete while getting core, in this depth layer position, can again carry out coring, can effectively avoid instrument to propose well head and find that certain one deck position does not complete coring, the situation that need to repeat goes into the well gets core occurs.
Technique scheme provided by the invention can be utilized the oscillating motion of rotating liquid cylinder pressure, and partition is swung in core tube, makes to carry out physical isolation between core and core, reaches 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 the length of institute's coring; Meanwhile, technique scheme structure provided by the invention forms rationally, easy to spread and implement.
Although it is apparent to those skilled in the art that the disclosed embodiment of the present invention as above, the embodiment that described content only adopts for ease of understanding the present invention, not in order to limit the present invention.Those of skill in the art under any the present invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can in the form of implementing and details, carry out any modification and variation; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (6)
1. for the core of side-wall core extractor, distinguish and a memory 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 to described core tube that the partition of distinguishing different layers position is provided, and described spacer element is for the arrival end to described core tube by described partition pendulum;
Push away core assembly, described in push away core assembly along the port bearing of trend setting of described core tube, described in to push away core assembly inner for core and described partition being pushed into described core tube; And
Control survey circuit, described control survey circuit be used for controlling described spacer element with described in push away core assembly action, and measure the length of rock core.
2. core according to claim 1 is distinguished and memory structure, it is characterized in that, 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 flowed to control survey circuit.
3. core according to claim 1 is distinguished and memory structure, it is characterized in that, described spacer element 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, and described partition baffle plate is used for limiting described partition and ejects described partition storage tank;
Described partition Compress Spring is arranged on described partition storage tank bottom, and described partition Compress Spring is used for supporting described partition;
Described swing arm is arranged between described partition baffle plate and described partition storage tank port, and described swing arm is for the arrival end to described core tube by described partition pendulum.
4. core according to claim 2 is distinguished and memory structure, it is characterized in that,
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 it is inner that described piston one end extends to described core tube;
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.
5. core according to claim 4 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 for detection of the described promotion length that pushes away core assembly;
Described control survey circuit, according to the detection signal of described detection components, is controlled described displacement transducer and is gathered displacement signal.
6. core according to claim 3 is distinguished and memory structure, it is characterized in that, described swing arm is provided with the semicircle groove corresponding with described partition diameter, and described swing arm is rocked to the partition in described semicircle groove by swing hydraulic pressure axle the arrival end of described core tube.
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| CN201410028730.2A CN103758514B (en) | 2014-01-21 | 2014-01-21 | A kind of core for side-wall core extractor is distinguished and memory structure |
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| CN201410028730.2A CN103758514B (en) | 2014-01-21 | 2014-01-21 | A kind of core for side-wall core extractor is distinguished and memory structure |
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Cited By (5)
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| CN104775782A (en) * | 2015-02-06 | 2015-07-15 | 中国海洋石油总公司 | Cleaning structure of well wall coring instrument |
| 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 |
| CN108106529A (en) * | 2017-11-18 | 2018-06-01 | 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 |
| WO2021056951A1 (en) * | 2019-09-23 | 2021-04-01 | 中海油田服务股份有限公司 | Downhole oil level detection device |
| CN117759221A (en) * | 2024-02-21 | 2024-03-26 | 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104775782A (en) * | 2015-02-06 | 2015-07-15 | 中国海洋石油总公司 | Cleaning structure of well wall coring instrument |
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| CN117759221A (en) * | 2024-02-21 | 2024-03-26 | 中海油田服务股份有限公司 | Downhole rotating well wall coring control method 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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| CN103758514B (en) | 2016-05-18 |
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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 |