CN202707024U - Immovable separate stratum fracture technology pipe column - Google Patents
Immovable separate stratum fracture technology pipe column Download PDFInfo
- Publication number
- CN202707024U CN202707024U CN 201220228696 CN201220228696U CN202707024U CN 202707024 U CN202707024 U CN 202707024U CN 201220228696 CN201220228696 CN 201220228696 CN 201220228696 U CN201220228696 U CN 201220228696U CN 202707024 U CN202707024 U CN 202707024U
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- packer
- separate stratum
- immovable
- pipe column
- stratum fracture
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Abstract
The utility model is an immovable separate stratum fracture technology pipe column and relates to an immovable pipe used for the separate stratum fracture technology which is applied to an oil and gas reservoir. The immovable separate stratum fracture technology pipe column overcomes the defects of poor reliability, packer-unseating difficulty, long construction cycle, easily-caused packer invalidation or halfway packer unseating problems under the well bottom pressure, and the like in the conventional separate stratum fracture construction-oriented technology pipe column. The immovable separate stratum fracture technology pipe column comprises an upper packer, a lower packer, a waterpower anchor, a sliding sleeve sand blower, a flow throttling device, and oil pipes, wherein the upper packer is a mechanical type packer, and the lower packer is an expanding type packer. The immovable separate stratum fracture technology pipe column is advantaged by reasonable structure, packer setting and unseating ease, short construction cycle, high reliability, and the like. The immovable separate stratum fracture technology pipe column is mainly used for the separate stratum fracture technology which is applied to an oil and gas reservoir.
Description
Technical field
The utility model relates to the corollary apparatus that uses in a kind of petroleum industry exploitation hyposmosis thin interbed oil-gas reservoir technique, particularly a kind of fixed tubular column to using in the oil-gas reservoir enforcement separate stratum fracfturing technique.
Background technology
At present, process pipe string for the separate stratum fracfturing construction mainly adopts two mechanical types or the combination of two inflatable packers, the layered fracturing pipe string of these two kinds of packer combinations all can not realize packer set separately, test the envelope and deblocking, and two mechanical packer combination deblocking difficulty, timely anti-flushing well when running into construction sand plug or sand card is for follow-up construction causes difficulty; Two inflatable packers combination employing drags the tubing string mode and realizes the separate stratum fracfturing construction, and construction period is longer, and is higher to the packing element performance requirement, also is unfavorable for fast instead the carrying out of row and other follow-up construction.The process pipe string of these two kinds of packer combinations all can not effectively solve the string creep that causes on the top on the bottom pressure, packer crooked and that cause thus lost efficacy or the problem of deblocking midway.
Summary of the invention
The purpose of this utility model is intended to solve the problem that existing layered fracturing technology pipe string exists in the Oil/gas Well construction, provides a kind of and can improve prior art shortcoming and Novel layered fracturing technology tubing string reasonable in design.
The purpose of this utility model can realize by following technical solution:
The process pipe string of this separate stratum fracfturing comprises upper packer, lower packet, hydraulic anchor, sand blower of sliding sleeve, restriction choke and oil pipe, and described upper packer is mechanical packer, and described lower packet is inflatable packer.It is by this two kinds of packers are set that upper and lower packer described in the process pipe string of this separate stratum fracfturing adopts respectively the effect of mechanical type and expanding, can in construction, realize setting separately, testing envelope and deblocking, but and construction finish after lower packet automatic rebounding deblocking, thereby realize that two described packer work operations are separate, do not interfere with each other and alleviate the process pipe string deblocking of this separate stratum fracfturing and the purposes such as difficulty that trip out.
The purpose of this utility model can also be achieved through the following technical solutions:
Upper packer top is provided with reverse circulation valve.The effect that described upper packer top arranges described reverse circulation valve is when this removing seal for packer runs into sand plug or sand card, realizes rapid anti-flushing well by this reverse circulation valve, in time removes problem.Be provided with expansion loop between described upper packer and the described lower packet.The effect that described expansion loop is set between described two packers is to alleviate string creep or the bending that cause on the bottom pressure top.Be provided with many interconnective oil pipes between described upper packer and the described lower packet.Effect at many interconnective oil pipes of use between described upper packer and the described lower packet is the distance that interconnects by the oil pipe more than two or two between the described upper packer of adjustment and the described lower packet, be convenient to be implemented in make in the oil well between described upper packer and the described lower packet and keep rational distance, satisfy construction requirement.The upper end of described expansion loop is connected with described upper packer.Described expansion loop directly is connected with described upper packer and can makes described expansion loop play best mitigation to pushing up the tubing string string wriggling or the bending that cause on the bottom pressure.Described sand blower of sliding sleeve lower end connects described lower packet upper end.Described sand blower of sliding sleeve directly links to each other with described lower packet upper end and can make its liquid outlet facing to upper oil reservoir lower bound, produces best construction effect.Between described lower packet and described restriction choke, be provided with centralizer.Described centralizer is arranged at and can makes described centralizer to the best centralizing function of this device performance between described lower packet and described restriction choke.
The beneficial effects of the utility model: owing to used the component parts such as described mechanical packer, expanding packing, improved that upper and lower oil reservoir in the separate stratum fracfturing construction is separated and the reliability of relatively independent construction, improved and set convenience, alleviate the process pipe string deblocking of this separate stratum fracfturing and the difficulty that trips out, reduced in the construction unfavorable factor to the impact of the process pipe string of this separate stratum fracfturing.So, the utlity model has rational in infrastructure, set and deblocking easily, short construction period, high reliability.
Description of drawings
Fig. 1 is the structural representation in the utility model embodiment use state.
Among the figure 1, oil pipe, 2, safety joint, 3, the buffering short circuit, 4, hydraulic anchor, 5, reverse circulation valve, 6, upper packer, 7, expansion loop, 8, oil pipe, 9, sand blower of sliding sleeve, 10, lower packet, 11, centralizer, 12, hydraulic anchor, 13, oil pipe, 14, restriction choke.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
A kind of process pipe string of fixed tubular column separate stratum fracfturing is comprised of upper packer 6, lower packet 10, hydraulic anchor 4, hydraulic anchor 12, reverse circulation valve 5, expansion loop 7, safety joint 2, buffering short circuit 3, centralizer 11, sand blower of sliding sleeve 9, restriction choke 14, oil pipe 1, oil pipe 8 and oil pipe 13.Oil pipe 1, safety joint 2, buffering short circuit 3, hydraulic anchor 4, reverse circulation valve 5, upper packer 6, expansion loop 7, oil pipe 8, sand blower of sliding sleeve 9, lower packet 10, centralizer 11, hydraulic anchor 12, oil pipe 13 are connected with restriction choke by order from top to bottom connect successively and lower going-into-well in, upper packer 6 is positioned at oil reservoir upper bound 5-15 rice, lower packet 10 is positioned at oil reservoir lower bound 0.5-1 rice, two packer intermediate distances are according to upper core intersection, by the radical adjustment of oil pipe 8.After tubing string enters well and puts in place, can suppress oil pipe with certain discharge capacity first sets lower packet 10, continue to suppress it is tested envelope, lower packet 10 automatic rebounding deblockings after the pressure release, afterwards by on the movable tubing string action such as propose, rotate, transfer upper packer 6 is set, then just suppressing it tested envelope.Pressing crack construction begins the rear discharge capacity of putting forward first to be suppressed lower packet 10 is set, and separates upper and lower oil reservoir, and liquid enters lower oil reservoir from restriction choke 14; Supporting steel ball of input and suppressing after the construction of lower oil reservoir is finished, the sliding sleeve of sand blower of sliding sleeve 9 is opened, sliding sleeve falls together with steel ball and restriction choke 14 outlets is blocked, continuing to put forward discharge capacity suppresses lower packet 10 is set, separate upper and lower oil reservoir, liquid flows out into upper oil reservoir from sand blower of sliding sleeve 9 outlets, and construction releases oil pressure after finishing, but lower packet 10 automatic rebounding deblockings, the upper lifting pipe post can make upper packer 6 deblockings and tubing string is proposed smoothly.If the phenomenon that sand plug or sand card oil pipe affect upper packer 6 deblockings occurs, can suppress reverse circulation valve 5 opened from sleeve pipe and carry out anti-flushing well, tubing string is proposed smoothly, reverse circulation valve 5 autoshutdowns after the pressure release, and reusable.During the construction of lower oil reservoir on the bottom pressure top can make string creep or bending, expansion loop can play cushioning effect to it, has greatly reduced the impact on upper packer 6.
Claims (7)
1. the process pipe string of a fixed tubular column separate stratum fracfturing comprises upper packer, lower packet, hydraulic anchor, sand blower of sliding sleeve, restriction choke and oil pipe, it is characterized in that described upper packer is mechanical packer, and described lower packet is inflatable packer.
2. the process pipe string of a kind of fixed tubular column separate stratum fracfturing as claimed in claim 1 is characterized in that upper packer top is provided with reverse circulation valve.
3. the process pipe string of a kind of fixed tubular column separate stratum fracfturing as claimed in claim 1 or 2 is characterized in that being provided with expansion loop between described upper packer and the described lower packet.
4. the process pipe string of a kind of fixed tubular column separate stratum fracfturing as claimed in claim 3 is characterized in that being provided with between described upper packer and the described lower packet many interconnective oil pipes.
5. the process pipe string of a kind of fixed tubular column separate stratum fracfturing as claimed in claim 4 is characterized in that the upper end of described expansion loop is connected with described upper packer.
6. the process pipe string of a kind of fixed tubular column separate stratum fracfturing as claimed in claim 5 is characterized in that described sand blower of sliding sleeve lower end connects described lower packet upper end.
7. the process pipe string of a kind of fixed tubular column separate stratum fracfturing as claimed in claim 6 is characterized in that being provided with centralizer between described lower packet and described restriction choke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228696 CN202707024U (en) | 2012-05-21 | 2012-05-21 | Immovable separate stratum fracture technology pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228696 CN202707024U (en) | 2012-05-21 | 2012-05-21 | Immovable separate stratum fracture technology pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707024U true CN202707024U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220228696 Expired - Fee Related CN202707024U (en) | 2012-05-21 | 2012-05-21 | Immovable separate stratum fracture technology pipe column |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443101A (en) * | 2016-01-14 | 2016-03-30 | 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 | Compression type double-sealing and single-clamping subsection fracturing process pipe column and fracturing method thereof |
| CN105715225A (en) * | 2014-12-03 | 2016-06-29 | 爱迪斯新技术有限责任公司 | Step-by-step pressure-guide packer, step-by-step pressure-guide layering fracturing device and fracturing method |
| CN107271304A (en) * | 2016-04-08 | 2017-10-20 | 中国石油化工股份有限公司 | Throttle sanding machine erosion test device and method |
| CN107916918A (en) * | 2017-11-16 | 2018-04-17 | 中国石油集团川庆钻探工程有限公司 | Reservoir stratum separate-layer transformation tool pipe column and fracturing and acidizing method |
| CN112360419A (en) * | 2020-11-16 | 2021-02-12 | 中国石油天然气股份有限公司 | Small-displacement energy supplementing and large-displacement fracturing continuous fracturing string and fracturing method |
-
2012
- 2012-05-21 CN CN 201220228696 patent/CN202707024U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715225A (en) * | 2014-12-03 | 2016-06-29 | 爱迪斯新技术有限责任公司 | Step-by-step pressure-guide packer, step-by-step pressure-guide layering fracturing device and fracturing method |
| CN105443101A (en) * | 2016-01-14 | 2016-03-30 | 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 | Compression type double-sealing and single-clamping subsection fracturing process pipe column and fracturing method thereof |
| CN107271304A (en) * | 2016-04-08 | 2017-10-20 | 中国石油化工股份有限公司 | Throttle sanding machine erosion test device and method |
| CN107271304B (en) * | 2016-04-08 | 2023-09-01 | 中国石油化工股份有限公司 | Erosion testing device and method for throttle sand blaster |
| CN107916918A (en) * | 2017-11-16 | 2018-04-17 | 中国石油集团川庆钻探工程有限公司 | Reservoir stratum separate-layer transformation tool pipe column and fracturing and acidizing method |
| CN112360419A (en) * | 2020-11-16 | 2021-02-12 | 中国石油天然气股份有限公司 | Small-displacement energy supplementing and large-displacement fracturing continuous fracturing string and fracturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20160521 |