CN103470241A - Dual-cluster hydraulic jet tubular column and dual-cluster hydraulic jet annulus fracturing method - Google Patents
Dual-cluster hydraulic jet tubular column and dual-cluster hydraulic jet annulus fracturing method Download PDFInfo
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- CN103470241A CN103470241A CN2013103665356A CN201310366535A CN103470241A CN 103470241 A CN103470241 A CN 103470241A CN 2013103665356 A CN2013103665356 A CN 2013103665356A CN 201310366535 A CN201310366535 A CN 201310366535A CN 103470241 A CN103470241 A CN 103470241A
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Abstract
The invention provides a dual-cluster hydraulic jet tubular column and a dual-cluster hydraulic jet annulus fracturing method. As a CTY-211 packer is provided with a check valve device, the pressure in an oil pipe is increased by increasing the discharge capacity, so as to enable fluid in a sliding sleeve spray gun and a single-stage spray gun to form high-speed jet flow for perforation. After the perforation is finished, the tubular column is lifted by 1.5 meters and then put down until a pressure gauge indicates the pressure change of 8-10 tons, namely the packer is set, then the sliding sleeve spray gun is in a blockage state after a well mouth is closed and the tubular column is lifted, and sand fluid is simultaneously injected into an oil sleeve annulus and the oil pipe for carrying out fracturing. The sand fluid in the oil pipe carries out fracturing only through the lower single-stage spray gun and can prevent sand plugging and reduce friction resistance, so that the service life of a spray nozzle is greatly improved. The oil sleeve annulus can carry out large-capacity fracturing, so the fracturing efficiency is improved, multilayer fracturing during once drill-down is realized, and the occurrence of hazards is reduced. After the fracturing is finished, the oil pipe and the oil sleeve annulus can be cleaned in a manner that fluid is injected into the oil pipe and flows out from the oil sleeve annulus.
Description
Technical field
The present invention relates to the oil well fracturing operation technical field, be specifically related to two bunch jetting tubing strings and two bunch jetting annular fracturing method.
Background technology
In the past few years, from " volume fracturing " theory, carried out the two bunch hydraulic jetting fracturings of horizontal well, the microseism band of its formation supplements overlapping again mutually, can increase the drainage volume of oil well horizontal well.Correctional effect is further improved.The increase, the well depth that spray the pressing crack construction number of plies along with oil well horizontal well water power increase, be subject to the impact of packer setting performance and spraycan abrasion-resistance, at present two bunch spraycans can not farthest be brought into play, cause in work progress rising frequently lower tubular column, change drilling tool, increase the non-cutting time of construction, and increased risk and the environment pollution in a lower tubular column process.
Specifically, at present, in two bunch pressure breaks of oil well horizontal well, the defect of existence is: 1. the material property of end packer determines that its restting number of times can be not a lot, 2. below the jeting effect as above spray gun not of spray gun, and easily cause sand plug.3. more risks that can the increase accident of the number of times of handling tubing string.4. fracturing fluid enters from oil pipe, and discharge capacity can be restricted.
Summary of the invention
The purpose of this invention is to provide a kind of two bunch jetting tubing string and two bunch jetting annular fracturing method, overcome two existing lower tubular columns that rise frequently of bunch pressure break of current oil well horizontal well, change drilling tool, the non-cutting time of construction is long, having a big risk and the defect of environment pollution in lower tubular column process.
For this reason, the invention provides a kind of two bunch jetting tubing string, comprise the packer, single-stage spray gun and the sliding sleeve spray gun that are arranged in turn on tubing string, and packer is arranged on an end end of this tubing string, the single-stage spray gun is arranged between packer and sliding sleeve spray gun, it is characterized in that: described packer is the packer that carries ball-and-seat.
Described packer is the CTY-211 packer.
A described two bunch jetting tubing string carries out two bunch jetting annular fracturing methods, it is characterized in that, comprises the following steps:
1), tubing string is carried out to the through wash well, well-flushing is consistent to importing and exporting water colour, wellbore pressure test 20Mpa, and voltage stabilizing 30min, pressure drop is no more than 0.7Mpa;
2), by tubing string, connect in turn packer, single-stage spray gun and sliding sleeve spray gun, and packer is arranged on the end, bottom of this tubing string, the single-stage spray gun is arranged between packer and sliding sleeve spray gun, complete the assembling of two bunch jetting tubing strings, then will assemble the two bunch jetting tubing strings design attitude of going into the well, well head and surface line are installed, and pressure testing;
3), make the sliding sleeve spray gun in running order, guarantee that packer is in the non-state that sets, to pumping liquid in tubing string, make liquid in sliding sleeve spray gun and single-stage spray gun form high-speed jet and carry out perforation;
4), treat that perforation finishes, 1.5 meters, upper lifting pipe post, then transfer, until pressure meter shows that pressure is changed to 8～10 tons, prove packer setting, then sit well head, sliding sleeve spray gun (3) is in blocked state after the upper lifting pipe post, injects sand liquid from oil jacket annular space and oil pipe simultaneously and carries out pressure break.
After pressure break finishes, by from the oil pipe filling liquid then from oil jacket annular space fluid, come cleaning tubing and oil jacket annular space.
In described step 1), tubing string being carried out to the through wash well is to utilize the drift size gauge tool of φ 118mm to carry out drifting to artificial bottom of a well.
The invention has the beneficial effects as follows: the CTY-211 packer of employing has good heat resisting and pressure resisting and restting performance, extended application life, sliding sleeve spray gun normal condition belongs to opening, facilitates perforation, when pressure break is carried out, due to handling tubing string packer setting, the sliding sleeve spray gun belongs to closed condition, has reduced the possibility of sand plug between single-stage spray gun and sliding sleeve spray gun, reduces frictional resistance, improve discharge capacity, the life-span of greatly improving nozzle; Reduced of the fracturing fluid performance requirement, carried out by annular fracturing and oil pipe pressure break simultaneously, improved the efficiency of pressure break, once the lower multiple fracturing of boring, reduce dangerous generation.
Below with reference to accompanying drawing, the present invention is described in further details.
The accompanying drawing explanation
Fig. 1 is two bunch jetting tubular column structure schematic diagrames.
1, packer; 2, single-stage spray gun; 3, sliding sleeve spray gun; 4, tubing string; 5, centralizer.
The specific embodiment
In order to overcome two existing lower tubular columns that rise frequently of bunch pressure break of current oil well horizontal well, change drilling tool, the non-cutting time of construction is long, having a big risk and the defect of environment pollution in a lower tubular column process.
For this reason, the invention provides the two bunch jetting tubing strings shown in a kind of Fig. 1, the outer end that comprises the packer 1(packer 1 be arranged in turn on tubing string is provided with centralizer 5), single-stage spray gun 2 and sliding sleeve spray gun 3, and packer 1 is arranged on an end end of this tubing string 4, single-stage spray gun 2 is arranged between packer 1 and sliding sleeve spray gun 3, packer 1 is the CTY-211 packer that carries ball-and-seat, and its packing element high temperature high voltage resistant has extended application life of instrument.
Provide the two bunch jetting tubing strings of a kind of utilization to carry out two bunch jetting annular fracturing methods simultaneously, comprised the following steps:
1), tubing string is carried out to the through wash well, well-flushing is consistent to importing and exporting water colour, wellbore pressure test 20Mpa, and voltage stabilizing 30min, pressure drop is no more than 0.7Mpa;
2), by tubing string, connect in turn packer 1, single-stage spray gun 2 and sliding sleeve spray gun 3, and packer 1 is arranged on the end, bottom of this tubing string, single-stage spray gun 2 is arranged between packer 1 and sliding sleeve spray gun 3, complete the assembling of two bunch jetting tubing strings, then will assemble the two bunch jetting tubing strings design attitude of going into the well, well head and surface line are installed, and pressure testing;
3), make sliding sleeve spray gun 3 in running order, guarantee that packer 1 is in the non-state that sets, to pumping liquid in tubing string, make the liquid of 2 li of sliding sleeve spray gun 3 and single-stage spray guns form high-speed jet and carry out perforation;
4), treat that perforation finishes, 1.5 meters, upper lifting pipe post, then transfer, until pressure meter shows that pressure is changed to 8～10 tons, prove that packer 1 sets, then sit well head, sliding sleeve spray gun 3 is in blocked state after the upper lifting pipe post, injects sand liquid from oil jacket annular space and oil pipe simultaneously and carries out pressure break.
After pressure break finishes, by from the oil pipe filling liquid then from oil jacket annular space fluid, come cleaning tubing and oil jacket annular space (space between oil pipe external diameter and casing inner diameter).
In step 1), tubing string being carried out to the through wash well is to utilize the drift size gauge tool of φ 118mm to carry out drifting to artificial bottom of a well.
In sum, be not difficult to find out, two bunch jetting tubing strings that the present embodiment provides and two bunch jetting annular fracturing method, because the CTY-211 packer carries the ball-and-seat device, so can make the liquid formation high-speed jet in sliding sleeve spray gun and single-stage spray gun carry out perforation by the pressure increased in discharge capacity increase oil pipe.Treat that perforation finishes, 1.5 meters, upper lifting pipe post, then transfer, until pressure meter shows that pressure is changed to 8～10 tons, the proof packer setting, then sit well head upper lifting pipe post after the sliding sleeve spray gun in blocked state, inject sand liquid from oil jacket annular space and oil pipe simultaneously and carry out pressure break.The sand liquid of oil pipe can only carry out pressure break and can prevent sand plug by following single-stage spray gun, reduce frictional resistance, the life-span of greatly improving nozzle.The oil jacket annular space can carry out the pressure break of large discharge capacity, has improved the efficiency of pressure break, and once the lower multiple fracturing of boring, reduce dangerous generation.After pressure break finishes by from the oil pipe filling liquid, then from oil jacket annular space fluid, coming cleaning tubing and oil jacket annular space (space between oil pipe external diameter and casing inner diameter).
More than exemplifying is only to illustrate of the present invention, does not form the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention all belongs to protection scope of the present invention.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (5)
1. a two bunch jetting tubing string, comprise the packer (1), single-stage spray gun (2) and the sliding sleeve spray gun (3) that are arranged in turn on tubing string, and packer (1) is arranged on an end end of this tubing string, single-stage spray gun (2) is arranged between packer (1) and sliding sleeve spray gun (3), it is characterized in that: described packer (1) is the packer that carries ball-and-seat.
2. two bunch jetting tubing string as claimed in claim 1, it is characterized in that: described packer (1) is the CTY-211 packer.
3. one kind is utilized the described two bunch jetting tubing strings of claim 1 or 2 to carry out two bunch jetting annular fracturing methods, it is characterized in that, comprises the following steps:
1), tubing string is carried out to the through wash well, well-flushing is consistent to importing and exporting water colour, wellbore pressure test 20Mpa, and voltage stabilizing 30min, pressure drop is no more than 0.7Mpa;
2), by tubing string, connect in turn packer (1), single-stage spray gun (2) and sliding sleeve spray gun (3), and packer (1) is arranged on the end, bottom of this tubing string, single-stage spray gun (2) is arranged between packer (1) and sliding sleeve spray gun (3), complete the assembling of two bunch jetting tubing strings, then will assemble the two bunch jetting tubing strings design attitude of going into the well, well head and surface line are installed, and pressure testing;
3), make sliding sleeve spray gun (3) in running order, guarantee that packer (1) is in the non-state that sets, to pumping liquid in tubing string, make the inner liquid of sliding sleeve spray gun (3) and single-stage spray gun (2) form high-speed jet and carry out perforation;
4), treat that perforation finishes, 1.5 meters, upper lifting pipe post, then transfer, until pressure meter shows that pressure is changed to 8～10 tons, proof packer (1) sets, then sit well head, after the upper lifting pipe post, sliding sleeve spray gun (3), in blocked state, injects sand liquid from oil jacket annular space and oil pipe simultaneously and carries out pressure break.
4. two bunch jetting annular fracturing method as claimed in claim 3, is characterized in that, after pressure break finishes, by from the oil pipe filling liquid then from oil jacket annular space fluid, come cleaning tubing and oil jacket annular space.
5. two bunch jetting annular fracturing method as claimed in claim 3, is characterized in that, in described step 1), tubing string being carried out to the through wash well is to utilize the drift size gauge tool of φ 118mm to carry out drifting to artificial bottom of a well.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310366535.6A CN103470241B (en) | 2013-08-21 | 2013-08-21 | Two bunches of jetting tubing strings and two bunches of jetting annular fracturing methods |
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| CN201310366535.6A CN103470241B (en) | 2013-08-21 | 2013-08-21 | Two bunches of jetting tubing strings and two bunches of jetting annular fracturing methods |
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| CN103470241B CN103470241B (en) | 2016-02-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761645A (en) * | 2016-12-28 | 2017-05-31 | 北京华晖盛世能源技术股份有限公司 | The structure of Oil/gas Well prospect pit hydraulic slotted liner technique test technology tubing string |
| CN110685611A (en) * | 2018-07-05 | 2020-01-14 | 中国石油化工股份有限公司 | Pipe column and method for abrasive perforation and soluble bridge plug combined double-cluster fracturing |
| CN111456691A (en) * | 2020-05-27 | 2020-07-28 | 中国石油天然气集团有限公司 | Method and device for single-section double-cluster continuous oil pipe bottom seal dragging fracturing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3270814A (en) * | 1964-01-23 | 1966-09-06 | Halliburton Co | Selective completion cementing packer |
| CN201090188Y (en) * | 2007-09-18 | 2008-07-23 | 中国石油天然气股份有限公司 | Fixedly tubular pile delamination hydraulic jet perforating and compression fracture integration tubular pile |
| CN101270639A (en) * | 2008-04-30 | 2008-09-24 | 中国石油天然气股份有限公司 | Packer packing multi-layer hydropower abrasive perforating and fracturing integrated technique |
| CN201144683Y (en) * | 2008-01-16 | 2008-11-05 | 中国石油化工股份有限公司西南油气分公司工程技术研究院 | Fracturing sliding bush sandblast |
| CN202108493U (en) * | 2011-05-25 | 2012-01-11 | 中国石油天然气股份有限公司 | Water jetting multi-cluster subsection fracturing strings of horizontal well |
| CN203476307U (en) * | 2013-08-21 | 2014-03-12 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Double-cluster hydraulic jetting string |
-
2013
- 2013-08-21 CN CN201310366535.6A patent/CN103470241B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3270814A (en) * | 1964-01-23 | 1966-09-06 | Halliburton Co | Selective completion cementing packer |
| CN201090188Y (en) * | 2007-09-18 | 2008-07-23 | 中国石油天然气股份有限公司 | Fixedly tubular pile delamination hydraulic jet perforating and compression fracture integration tubular pile |
| CN201144683Y (en) * | 2008-01-16 | 2008-11-05 | 中国石油化工股份有限公司西南油气分公司工程技术研究院 | Fracturing sliding bush sandblast |
| CN101270639A (en) * | 2008-04-30 | 2008-09-24 | 中国石油天然气股份有限公司 | Packer packing multi-layer hydropower abrasive perforating and fracturing integrated technique |
| CN202108493U (en) * | 2011-05-25 | 2012-01-11 | 中国石油天然气股份有限公司 | Water jetting multi-cluster subsection fracturing strings of horizontal well |
| CN203476307U (en) * | 2013-08-21 | 2014-03-12 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Double-cluster hydraulic jetting string |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761645A (en) * | 2016-12-28 | 2017-05-31 | 北京华晖盛世能源技术股份有限公司 | The structure of Oil/gas Well prospect pit hydraulic slotted liner technique test technology tubing string |
| CN110685611A (en) * | 2018-07-05 | 2020-01-14 | 中国石油化工股份有限公司 | Pipe column and method for abrasive perforation and soluble bridge plug combined double-cluster fracturing |
| CN110685611B (en) * | 2018-07-05 | 2021-06-15 | 中国石油化工股份有限公司 | Pipe column and method for abrasive perforation and soluble bridge plug combined double-cluster fracturing |
| CN111456691A (en) * | 2020-05-27 | 2020-07-28 | 中国石油天然气集团有限公司 | Method and device for single-section double-cluster continuous oil pipe bottom seal dragging fracturing |
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Effective date of registration: 20201106 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1207 Patentee before: CHANGQING DOWNHOLE TECHNOLOGY OPERATION COMPANY OF CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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