CN104832127A - Intelligent control casing valve applied to unbalanced drilling/completion - Google Patents
Intelligent control casing valve applied to unbalanced drilling/completion Download PDFInfo
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- CN104832127A CN104832127A CN201510214510.3A CN201510214510A CN104832127A CN 104832127 A CN104832127 A CN 104832127A CN 201510214510 A CN201510214510 A CN 201510214510A CN 104832127 A CN104832127 A CN 104832127A
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Abstract
The invention provides an intelligent control casing valve applied to unbalanced drilling/completion. The intelligent control casing valve comprises a body, a valve plate, a battery pack, an RFID (radio frequency identification) system, a hydraulic pump and an inner cylinder sleeve, wherein the hydraulic pump is controlled by the RFID system, and the inner cylinder sleeve is controlled by the hydraulic pump; the RFID system comprises a tag and a reader; the tag is embedded into a drill stem or is a signal ball, and the reader is arranged at the upper part of the body; a containing cavity is formed in the lower part of the body; hydraulic lines of the hydraulic pump are respectively connected with two ends of the containing cavity; the inner cylinder sleeve and the containing cavity form a sealing cavity; the side wall of the sealing cavity is provided with a boss; the boss is inserted into the containing cavity; the lower end of the inner cylinder sleeve is contacted with the valve plate; the valve plate is fixedly arranged on the body through a hinge pin and a torsional spring sheathing the hinge pin; when the inner cylinder sleeve is downward, the valve plate can be opened; the battery pack is arranged on the body, and is respectively connected with the hydraulic pump and the reader. The intelligent control casing valve is simple to install; whether the valve plate is opened or closed can be selected according to down-hole working condition, so the service life of the casing valve is effectively prolonged, and the efficiency and the safety of the unbalanced drilling are improved.
Description
Technical field
The present invention relates to petroleum works under-balanced drilling technology field, particularly a kind of Based Intelligent Control casing valve being applied under balance pressure drilling/completion.
Background technology
Along with to the continuous increase of petroleum resources amount demand and the continuous progress of drilling technology, under-balanced drilling technology obtains further investigation and development.Under-balanced drilling technology has lot of superiority, and it effectively can solve a difficult problem for the contaminated oil gas-bearing formation that traditional drilling well brings, greatly alleviates the injury of drilling well formation, reduce leakage, improve rate of penetration, shorten well construction period, especially effectively can find concealed oil-gas Layer etc.But current most under balance pressure drilling only achieves underbalance in drilling process, and when operations such as completions, be all the mode of operation after the first kill-job of employing, this operation creates the pollution to oil-gas Layer to a great extent, have impact on the effect of under balance pressure drilling.Therefore, also been proposed the concept of overall process under-balance drilling technology in recent years, namely in drilling well, the whole process of completion, all adopt the form of snubbing serving, thus finally avoid the injury to oil-gas Layer, and down hole sleeve valve is one of core tool realizing overall process under-balance operation.
Down-hole casing valve technology is the new technology occurred the middle and later periods nineties 20th century, and for this new technology, lot of domestic and international company all expands corresponding research work.Current down hole sleeve valve is mainly divided into wired casing valve and wireless casing valve.Wired casing valve mainly comprises hydraulic control casing valve and cable controls casing valve.Hydraulic control casing valve connects single or two hydraulic pressure capillary solution pipelines in the hydraulic cavities of down hole sleeve valve by ground hydraulic switch board, makes a certain logical high pressure of two hydraulic pressure capillary oil pipe realize opening and closedown of the clack valve of down hole sleeve valve by ground in the face of the operation of hydraulic control cabinet.The installation process of the down hole sleeve valve of this form is complicated.This can cause certain negative effect to normal wellbore construction, and the high pressure capillary oil pipe line of nearly km uses an inherently high-risk source of trouble in drilling well down-hole.It is by the motor of land cable adapter sleeve pipe valve that cable controls casing valve, transfers by controlling the positive and negative of motor the switch controlling wrom tooth transmission device and then control casing valve valve plate.The cable that km even gone up by hundreds of rice adds the application cost of casing valve, remains a high-risk source of trouble.
Wireless casing valve mainly comprises wireless mechanical casing valve and radio minor casing valve.Wireless mechanical casing valve mainly contains quick trip-out valve (the Quick Trip Valve of Halliburton Company, QTV) system, this casing valve installs a set of mechanical device opening casing valve inner cylinder liner bottom drill string, this mechanical device reduces the anti-twisting property of drill string, affects the flow channel of drilling fluid.Radio minor casing valve mainly contains the wireless casing valve of electromagnetic type, this casing valve is that certain distance installs one without magnetic casing nipple above casing valve valve plate, when drill string can cause the change of magnetic conductivity through this pipe nipple, and then control the switch of casing valve valve plate by control system.This casing valve once with sleeve pipe install after, even if do not need close casing valve valve plate time, as long as drill string also can be closed through out-of-date, so just accelerate the consumption to power supply.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of Based Intelligent Control casing valve being applied under balance pressure drilling/completion, whether it installs simple, and can close according to shaft bottom operating mode selector valve plate, in the application life of extending sleeve pipe valve, improve under balance pressure drilling efficiency and safety.
For this reason, technical scheme of the present invention is as follows:
Be applied to a Based Intelligent Control casing valve under balance pressure drilling/completion, itself and sleeve pipe become a part for casing string by screwed connection; Described Based Intelligent Control casing valve comprises body, valve plate, battery pack, rfid system, controls the hydraulic pump of opening and closing and it moves up and down by hydraulic pump control inner cylinder liner by rfid system; Described rfid system comprises label and reader, and described label embeds drill string or with the independent setting of signal ball, described reader is arranged on the top of described body, and described hydraulic pump is connected with described reader by holding wire; The bottom of described body is formed with cavity volume, and two hydraulic lines of described hydraulic pump are connected to the two ends up and down of described cavity volume; Described inner cylinder liner and described cavity volume form annular seal space, and its sidewall is provided with boss, and described boss is embedded above-mentioned cavity volume and formed by sealing ring and chamber wall and seals; The lower end of described inner cylinder liner contacts with described valve plate, and described valve plate is fixed on the body by bearing pin and the torsion spring be enclosed within outside bearing pin; Described inner cylinder liner can open described valve plate downwards; Described battery pack is arranged on body, is connected respectively with hydraulic pump with reader, is its power supply.
The upper surface of described valve plate is irregular cambered surface, and when the free end of valve plate is downward, it still can contact to the corresponding side of inner cylinder liner, until valve plate fixation side is subject to torsion spring power be upwards less than the downward power of inner cylinder liner, valve plate is opened.
The core of described signal ball is label, and outside is topping, and protective layer material is resin, preferred phenolic resins.
It is inner that described label embeds intelligent pipe nipple, and its surface is covered with wearing layer, and described intelligent pipe nipple is connected on drill string.
This is applied to the Based Intelligent Control casing valve of under balance pressure drilling/completion, the additional line of km even by the hundreds of rice not only eliminated from earth's surface well head to casing valve, and the function that drill string selects casing valve valve plate whether to close through casing valve according to shaft bottom operating mode can be realized, it meets the requirement of Based Intelligent Control casing valve switch, the application life of energy extending sleeve pipe valve, improve under balance pressure drilling efficiency and safety, can promote that the further genralrlization of underbalance drilling technology is applied.
Accompanying drawing explanation
Fig. 1 is the structure chart being applied to the Based Intelligent Control casing valve of under balance pressure drilling/completion provided by the invention; ,
Fig. 2 is intelligent pipe nipple sectional drawing.
Detailed description of the invention
Below in conjunction with drawings and Examples, the structure being applied to the Based Intelligent Control casing valve of under balance pressure drilling/completion provided by the invention is described in detail.
Embodiment 1
As shown in Figure 1, 2: Based Intelligent Control casing valve becomes a part for casing string 3 by screwed connection, it comprise body 11, valve plate 16, battery pack 7, rfid system, by rfid system control opening and closing hydraulic pump 9 and control its inner cylinder liner 12 moved up and down by hydraulic pump 9; Wherein, rfid system comprises label 17 and reader 6, and it is inner that label 17 embeds intelligent pipe nipple 5, and its surface is covered with wearing layer 18, and this intelligent pipe nipple is connected on drill string 4; Reader 6 is arranged on the top of body 11, and hydraulic pump 9 is connected with reader 6 by holding wire 8; The bottom of body 11 is formed with cavity volume 2, and two hydraulic lines 10 of hydraulic pump 9 are connected to the two ends up and down of cavity volume 2; Inner cylinder liner 12 and cavity volume 2 form annular seal space, and its sidewall is provided with boss, and boss is embedded above-mentioned cavity volume 2 and formed by sealing ring 13 and chamber wall and seals; The lower end of inner cylinder liner 12 contacts with valve plate 16, and valve plate 16 is fixed on body 11 by bearing pin 14 and the torsion spring 15 be enclosed within outside bearing pin 14; Inner cylinder liner 12 can open valve plate 16 downwards; Described battery pack 7 is arranged on body 11, is connected respectively with hydraulic pump 9 with reader 6, is its power supply.Battery pack preferred lithium battery.
The upper surface of valve plate 16 is irregular cambered surface, and when the free end of valve plate 16 is downward, it still can contact to the corresponding side of inner cylinder liner 12, until valve plate 16 fixation side is subject to torsion spring 15 power be upwards less than the downward power of inner cylinder liner 12, valve plate 16 is opened.
During use: drill string 4 is carried, if reader 6 can't detect label 17, then valve plate 16 stays open state and does not close, and drill string 4 is carried on continuing; And generation pumping signal is reversed by holding wire 8 hydraulic control pump 9 after reader 6 detects label 17, battery pack 7 provides power source for hydraulic pump 9, by hydraulic line 10, the boss of inner cylinder liner 12 is moved up in cavity volume 2, then drive inner cylinder liner 12 up, close casing valve valve plate 16 by the torsion spring 15 on bearing pin 14, realize the sealing to casing valve valve plate less than 16 wellbore pressure.
Embodiment 2
With Based Intelligent Control casing valve structure in embodiment 1 unlike: this drill string 4 is not connected intelligent pipe nipple 5, and label adopts the mode of signal ball 19 to exist, and this signal ball 19 core is label 17, the outside topping for resin formation, the preferred phenolic resins of resin.
During use, because drill string 4 did not install intelligent pipe nipple 5 before going into the well, but in fractured rock process, strata pressure increases suddenly, drill string 4 needs when pulling out of hole to close casing valve valve plate 16, at this moment only drill string 4 need be worked the position got between valve plate 16 and signal reader 6 bottom, then signal ball 19 is dropped into from well head 1, when signal ball 19 drops near reader 6 along the endoporus of drill string 4, it is up that reader 6 detects that label 17 controls inner cylinder liner 12, closes casing valve valve plate 16 to realize the sealing to casing valve valve plate less than 16 wellbore pressure.
This is applied to the Based Intelligent Control casing valve of under balance pressure drilling/completion, the additional line of km even by the hundreds of rice not only eliminated from earth's surface well head to casing valve, and the function that drill string selects casing valve valve plate whether to close through casing valve according to shaft bottom operating mode can be realized, power saving, can application life of extending sleeve pipe valve, improve under balance pressure drilling efficiency and safety, can promote that the further genralrlization of underbalance drilling technology is applied.
Claims (5)
1. be applied to a Based Intelligent Control casing valve under balance pressure drilling/completion, itself and sleeve pipe are connected to become a part for casing string (3); It is characterized in that: described Based Intelligent Control casing valve comprise body (11), valve plate (16), battery pack (7), rfid system, by rfid system control opening and closing hydraulic pump (9) and control its inner cylinder liner moved up and down (12) by hydraulic pump (9); Described rfid system comprises label (17) and reader (6), described label (17) embeds drill string (4) or arranges separately in the mode of signal ball (19), described reader (6) is arranged on the top of described body (11), and described hydraulic pump (9) is connected with described reader (6) by holding wire (8); The bottom of described body (11) is formed with cavity volume (2), and two hydraulic lines (10) of described hydraulic pump (9) are connected to the two ends up and down of described cavity volume (2); Described inner cylinder liner (12) and described cavity volume (2) form annular seal space, and its sidewall is provided with boss, and described boss is embedded above-mentioned cavity volume (2) and formed by sealing ring (13) and chamber wall and seals; The lower end of described inner cylinder liner (12) contacts with described valve plate (16), and described valve plate (16) is by bearing pin (14) and be enclosed within bearing pin (14) torsion spring outward (15) and be fixed on described body (11); Described inner cylinder liner (12) can open described valve plate (16) downwards; Described battery pack (7) is arranged on body (11), is connected respectively with hydraulic pump (9) with reader (6).
2. Based Intelligent Control casing valve as claimed in claim 1, is characterized in that: the upper surface of described valve plate (16) is irregular cambered surface.
3. Based Intelligent Control casing valve as claimed in claim 1, is characterized in that: the core of described signal ball (19) is label (17), and outside is topping.
4. Based Intelligent Control casing valve as claimed in claim 1, it is characterized in that: it is inner that described label (17) embeds intelligent pipe nipple (5), its surface is covered with wearing layer (18), and described intelligent pipe nipple (5) is connected on drill string (4).
5. Based Intelligent Control casing valve as claimed in claim 3, is characterized in that: described topping is resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510214510.3A CN104832127B (en) | 2015-04-29 | 2015-04-29 | Intelligent control casing valve applied under balance pressure drilling/completion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510214510.3A CN104832127B (en) | 2015-04-29 | 2015-04-29 | Intelligent control casing valve applied under balance pressure drilling/completion |
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| CN104832127A true CN104832127A (en) | 2015-08-12 |
| CN104832127B CN104832127B (en) | 2017-09-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366535A (en) * | 2016-05-12 | 2017-11-21 | 中国石油化工股份有限公司 | Utilize the system and method for magnetic signal positioning drilling well tracer depth |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
| US11306561B2 (en) | 2017-05-25 | 2022-04-19 | Weatherford Technology Holdings, Llc | Pressure integrity testing of one-trip completion assembly |
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| US20040129424A1 (en) * | 2002-11-05 | 2004-07-08 | Hosie David G. | Instrumentation for a downhole deployment valve |
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| CN103334715A (en) * | 2013-06-17 | 2013-10-02 | 中国石油集团长城钻探工程有限公司 | Casing valve for use in unbalanced drilling |
| CN103790551A (en) * | 2012-11-05 | 2014-05-14 | 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 | Mechanical underground sleeve valve |
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2015
- 2015-04-29 CN CN201510214510.3A patent/CN104832127B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040084189A1 (en) * | 2002-11-05 | 2004-05-06 | Hosie David G. | Instrumentation for a downhole deployment valve |
| US20040129424A1 (en) * | 2002-11-05 | 2004-07-08 | Hosie David G. | Instrumentation for a downhole deployment valve |
| CN200964826Y (en) * | 2006-11-08 | 2007-10-24 | 新疆石油管理局钻井工艺研究院 | Under-balanced downhole casing valve capable of permanently locking |
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| CN102305054A (en) * | 2011-09-20 | 2012-01-04 | 武汉理工大学 | Underground separated layer water injection control system based on RFID (radio frequency identification device) |
| CN102493785A (en) * | 2011-12-02 | 2012-06-13 | 中国石油集团长城钻探工程有限公司 | Automatic control sleeve valve |
| CN103790551A (en) * | 2012-11-05 | 2014-05-14 | 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 | Mechanical underground sleeve valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366535A (en) * | 2016-05-12 | 2017-11-21 | 中国石油化工股份有限公司 | Utilize the system and method for magnetic signal positioning drilling well tracer depth |
| US11306561B2 (en) | 2017-05-25 | 2022-04-19 | Weatherford Technology Holdings, Llc | Pressure integrity testing of one-trip completion assembly |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
| CN111706295B (en) * | 2020-07-14 | 2021-03-23 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104832127B (en) | 2017-09-15 |
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Effective date of registration: 20210826 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106, Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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