CN103510870A - Drilling tool joint device and technique capable of achieving continuous circulation of gas drilling - Google Patents
Drilling tool joint device and technique capable of achieving continuous circulation of gas drilling Download PDFInfo
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- CN103510870A CN103510870A CN201210207395.3A CN201210207395A CN103510870A CN 103510870 A CN103510870 A CN 103510870A CN 201210207395 A CN201210207395 A CN 201210207395A CN 103510870 A CN103510870 A CN 103510870A
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Abstract
The invention relates to the field of gas drilling, in particular to a drilling tool joint device and technique capable of achieving continuous circulation of gas drilling. According to the technical scheme, the drilling tool joint device comprises a drilling tool joint and a first gas circulation channel formed inside the drilling tool joint, and a second gas circulation channel communicated with the first gas circulation channel is further formed in the lateral wall of the drilling tool joint. The gas drilling continuous circulation technique achieved with the joint device comprises the steps of (1) closing the first gas circulation channel in the drilling tool joint and opening the second gas circulation channel to enable gas circuit circulation to be achieved between the second gas circulation channel and a drilling tool; (2) releasing the pressure of gas in a water hose and connecting and dismantling the drilling tool normally; (3) opening the first gas circulation channel, supplying gas to achieve circulation, and closing the second gas circulation channel at the same time; (4) recovering drilling or tripping operation. According to the drilling tool joint device and technique capable of achieving continuous circulation of gas drilling, continuous circulation of gas drilling is achieved, non-drilling time is shortened, well drilling effectiveness is improved, and well drilling accidents caused by sand setting are overcome.
Description
Technical field
The present invention relates to gas drilling field, relate in particular to a kind of tool joint device and technique that realizes gas drilling continuous circulation.
Background technology
Gas drilling mainly contains and increases substantially rate of penetration, extends drilling life of bit, reduces drilling cost, reduces formation damage, reduces down hole problem (leakage or differential sticking etc.), is beneficial to the advantages such as environmental protection.Therefore, gas drilling has been subject to the great attention of various countries, and rapidly, range of application is more and more wider in development.In the time of air drilling fast development, also demonstrate its many limitation.While unloading drilling tool in existing gas drilling technological process, generally need circulation-release-connect four steps such as drilling tool-recovery circulation, before the drilling tool of unloading, need abundant circulation, connecing after finishing drilling tool Compressed Gas again reaches pressure while normally creeping into and needs again certain hour, the corresponding increase of out-of-hole time like this, has reduced drilling well timeliness.In addition, interrupt after gas circulation, in straight well construction, the sand setting of straight well section annular space can be deposited near bit location very soon, forms and piles up; In horizontal well construction, the sand setting of straight well section annular space can be stacked into horizontal segment and start position, and the remaining sand of horizontal segment can direct sedimentation form cutting bed.When bore meeting water outlet, going out gas-bearing formation position, while easily caving in layer position and net horizontal section, connecing finishing drilling Ju Hou shaft bottom sand setting number meter, the smooth situation of annular space is very general.These situations all may cause gas drilling to finish in advance or down-hole complex accident occurs.
In sum, gas drilling technique can not be set up continuous gas circulation at present, has limited it in the applicability of the aspects such as layer position, water exit, long horizontal sections horizontal well of easily caving in.Be necessary to design new technological process, set up continuous gas circulation, the advantage that this can embody the synergy of gas drilling speedup more, can reduce security risk again, and enlargement gas DRILLING APPLICATION scope improves exploration and development benefit.
Summary of the invention
Defect for prior art, the invention provides a kind of simple in structure, easy to operate tool joint device, apply it and can realize gas drilling continuous circulation, reduce the non-brill time, improve drilling well timeliness, and can overcome the drilling failure causing due to sand setting sedimentation.
The technical scheme of tool joint device is: comprise tool joint and interior gas circulation path one thereof, and on tool joint sidewall, be also provided with the gas circulation path two being communicated with gas circulation path one.The gas drilling continuous circulation process of applying above-mentioned piecing devices is:
(1), close the gas circulation path one in tool joint, open gas circulation path two, set up gas circuit circulation with drilling tool;
(2), lay down the gas pressure in hose, the drilling tool of normally unloading;
(3), open gas circulation path one, air feed is set up circulation, closes gas circulation path two simultaneously;
(4), can recover creep into or make a trip.
In order better to realize the conversion of gas circulation path, tool joint device also comprises the gas circulation path control being connected with gas circulation path two, which is provided with admission valve and relief valve, described gas circulation path control with tool joint for being flexibly connected.Its concrete continuous circulation process is as follows:
(1), first use gas circulation path control to connect tool joint, and sealing;
(2), open controller admission valve, from gas circulation path two, set up circulation, close gas circulation path one;
(3), handstand tube valve is laid down the gas pressure in hose, the drilling tool of normally unloading;
(4), open gas circulation path one, air feed is set up circulation, closes gas circulation path two;
(5), closing controller air intake valve, open the pressure release of controller relief valve, lay down being connected of controller and tool joint;
(6), recover creep into or make a trip.
Compared with prior art, it can realize gas drilling continuous circulation the present invention, reduces the non-brill time, improves drilling well timeliness, and can overcome the drilling failure causing due to sand setting sedimentation.
Accompanying drawing explanation
Fig. 1 is the tool joint device schematic diagram of gas drilling continuous circulation;
Wherein: 1, gas circulation path one, 2, gas circulation path two, 3, tool joint, 4, controller relief valve, 5 gas circulation path controls, 6 controller admission valves.
The specific embodiment
Below with reference to Fig. 1, take stacks as example, the present invention is described further.
With reference to Fig. 1., a kind of tool joint device of gas drilling continuous circulation comprises tool joint 3, in it, be provided with gas circulation channel 1, tool joint 3 sidewalls are provided with the gas circulation path 22 being communicated with gas circulation channel 1, on gas circulation path two, connect gas circulation path control 5, which is provided with admission valve 6 and relief valve 4, gas circulation path control 5 for being flexibly connected, is convenient to dismounting with tool joint 3.
Its continuous circulation process step is as follows:
first use gas circulation path 3 controller jointed rod joints 3, and sealing;
open controller admission valve 6, from gas circulation path 22, set up circulation, close gas circulation path 1;
closing controller admission valve 6, opens 4 pressure releases of controller relief valve, lays down being connected of controller 5 and tool joint 3;
Before connecing drilling tool, in tool joint shown in every drilling tool waiting top installation drawing 1, while connecing drilling tool, drilling tool is sat and is placed on elevator, then operate by above-mentioned steps.
Claims (4)
1. realize a tool joint device for gas drilling continuous circulation, comprise tool joint and interior gas circulation path one thereof, it is characterized in that, described tool joint sidewall is provided with the gas circulation path two being communicated with gas circulation path one.
2. the tool joint device of gas drilling continuous circulation according to claim 1, it is characterized in that, described tool joint device also comprises the gas circulation path control being connected with gas circulation path two, which is provided with admission valve and relief valve, described gas circulation path control with tool joint for being flexibly connected.
3. application rights requires the gas drilling continuous circulation process of the tool joint device described in 1, it is characterized in that, technical process is:
(1), close the gas circulation path one in tool joint, open gas circulation path two, set up gas circuit circulation with drilling tool;
(2), lay down the gas pressure in hose, the drilling tool of normally unloading;
(3), open gas circulation path one, air feed is set up circulation, closes gas circulation path two simultaneously;
(4), can recover creep into or make a trip.
4. application rights requires the gas drilling continuous circulation process of the tool joint device described in 2, it is characterized in that, technical process is:
(1), first use gas circulation path control to connect tool joint, and sealing;
(2), open controller admission valve, from gas circulation path two, set up circulation, close gas circulation path one;
(3), handstand tube valve is laid down the gas pressure in hose, the drilling tool of normally unloading;
(4), open gas circulation path one, air feed is set up circulation, closes gas circulation path two;
(5), closing controller air intake valve, open the pressure release of controller relief valve, lay down being connected of controller and tool joint;
(6), recover creep into or make a trip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210207395.3A CN103510870A (en) | 2012-06-21 | 2012-06-21 | Drilling tool joint device and technique capable of achieving continuous circulation of gas drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210207395.3A CN103510870A (en) | 2012-06-21 | 2012-06-21 | Drilling tool joint device and technique capable of achieving continuous circulation of gas drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103510870A true CN103510870A (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210207395.3A Pending CN103510870A (en) | 2012-06-21 | 2012-06-21 | Drilling tool joint device and technique capable of achieving continuous circulation of gas drilling |
Country Status (1)
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| CN (1) | CN103510870A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397433A (en) * | 2019-08-30 | 2019-11-01 | 中国石油集团川庆钻探工程有限公司 | A kind of cutting bed identifying system |
| CN110454149A (en) * | 2019-08-30 | 2019-11-15 | 中国石油集团川庆钻探工程有限公司 | A kind of cutting bed recognition methods and position decision method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664302A (en) * | 2005-01-13 | 2005-09-07 | 西南石油学院 | Continuous circulation system for oil and gas well and usage thereof |
| CN102226382A (en) * | 2011-05-19 | 2011-10-26 | 深圳市远东石油钻采工程有限公司 | Uninterrupted circulating pup joint for petroleum well drilling and continuous slurry circulation method |
| CN102400653A (en) * | 2011-11-09 | 2012-04-04 | 深圳市远东石油钻采工程有限公司 | Continuous circulating system |
| CN202266231U (en) * | 2011-10-26 | 2012-06-06 | 中国石油天然气股份有限公司 | Auxiliary pressure-bearing device for rubber barrel of self-expansion packer |
-
2012
- 2012-06-21 CN CN201210207395.3A patent/CN103510870A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664302A (en) * | 2005-01-13 | 2005-09-07 | 西南石油学院 | Continuous circulation system for oil and gas well and usage thereof |
| CN102226382A (en) * | 2011-05-19 | 2011-10-26 | 深圳市远东石油钻采工程有限公司 | Uninterrupted circulating pup joint for petroleum well drilling and continuous slurry circulation method |
| CN202266231U (en) * | 2011-10-26 | 2012-06-06 | 中国石油天然气股份有限公司 | Auxiliary pressure-bearing device for rubber barrel of self-expansion packer |
| CN102400653A (en) * | 2011-11-09 | 2012-04-04 | 深圳市远东石油钻采工程有限公司 | Continuous circulating system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397433A (en) * | 2019-08-30 | 2019-11-01 | 中国石油集团川庆钻探工程有限公司 | A kind of cutting bed identifying system |
| CN110454149A (en) * | 2019-08-30 | 2019-11-15 | 中国石油集团川庆钻探工程有限公司 | A kind of cutting bed recognition methods and position decision method |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |