CN102562017A - Sand blasting, perforating and fracturing method - Google Patents
Sand blasting, perforating and fracturing method Download PDFInfo
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- CN102562017A CN102562017A CN2010106119868A CN201010611986A CN102562017A CN 102562017 A CN102562017 A CN 102562017A CN 2010106119868 A CN2010106119868 A CN 2010106119868A CN 201010611986 A CN201010611986 A CN 201010611986A CN 102562017 A CN102562017 A CN 102562017A
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- perforating
- abrasive perforating
- fracturing
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- coiled tubing
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000005488 sandblasting Methods 0.000 title abstract 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims description 24
- 230000006378 damage Effects 0.000 abstract description 11
- 208000027418 Wounds and injury Diseases 0.000 description 7
- 208000014674 injury Diseases 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a sand blasting, perforating and fracturing method which comprises the following steps of: (1) making a continuous oil tube connected with a sand blasting and perforating device pass through a production oil tube to reach a construction target layer; (2) sand-blasting and perforating a first perforating layer until annulus sand fracturing construction is finished; (3) lifting the continuous oil tube to a new perforating layer, and sand-blasting and perforating the new perforating layer until annulus sand fracturing construction is finished; (4) repeating the step (3) until the sanding and fracturing of all perforating layers are finished; and (5) and lifting the continuous oil tube out of the production oil tube. In the sand blasting, perforating and fracturing method, sand blasting and perforating and annulus sand fracturing operations are directly carried out from the production oil tube into the sand blasting and perforating device, the technological links are reduced, production can be performed after lifting out of the sand blasting and perforating device, the well killing operation and entering the production oil tube are unnecessary, and the harm to a reservoir stratum is avoided.
Description
Technical field
The present invention relates to the underground work technical field of oil, the construction of natural gas fields, specifically a kind of abrasive perforating fracturing process.
Background technology
At present, in oilfield exploitation,,, exploit of poor benefitsly, become the bottleneck of this type of oilfield exploitation because production capacity is low for the oil field of hyposmosis reserves.For solving the mining problem of low permeability oil field, pit shaft is carried out the abrasive perforating pressure break, that sets up pit shaft and stratum effectively is connected to become key.Existing abrasive perforating fracturing process mainly comprises two kinds: 1, fixed tubular column abrasive perforating fracturing technique, and utilize oil pipe that perforation tool is lowered into design attitude, carry out abrasive perforating; Sand fracturing in the oil pipe; Through throwing the ball of different-diameter, open perforator, realize the purpose of separate stratum fracfturing.2, with the injection fracturing technique of coiled tubing band abrasive perforating device: utilize coiled tubing in sleeve pipe, the abrasive perforating device to be lowered to design attitude, carry out abrasive perforating, sleeve pipe sand fracturing then.Drag through coiled tubing, change the perforation position, reach the purpose of separate stratum fracfturing.Said method has following shortcoming: 1, fixed tubular column abrasive perforating fracturing technique: (1) layered effect is bad; (2) cause the risk of sand pipe laying post easily.2, with the injection pressure break of coiled tubing band abrasive perforating device: in sleeve pipe, carry out, descend flow string after the pressure break again, need kill-job again, this just causes the injury to reservoir, reduces production capacity.
This shows that above-mentioned existing abrasive perforating fracturing process obviously still has inconvenience and defective, and demands urgently further improving in the use.In order to solve the problem that the abrasive perforating fracturing process exists, person skilled is there's no one who doesn't or isn't sought solution painstakingly, but does not see always that for a long time suitable scheme is developed completion, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing abrasive perforating fracturing process exists; The inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge; And cooperate the utilization of studying the science, actively study innovation, in the hope of founding a kind of abrasive perforating fracturing process; Can improve existing method, make it have more practicality.
Summary of the invention
In order to solve the problems referred to above that exist in the prior art, the invention provides a kind of abrasive perforating fracturing process, can effectively improve the oil gas well capacity, reduce injury to the reservoir of oil gas well.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
The abrasive perforating fracturing process comprises the steps:
The coiled tubing that a. will be connected with the abrasive perforating device passes arrival construction target zone in production tube;
B. the first perforation layer being carried out abrasive perforating finishes until annular space sand fracturing construction;
C. carry coiled tubing to new perforation layer on, new perforation layer is carried out abrasive perforating finish until annular space sand fracturing construction;
D. repeating step c is until the sand fracturing of accomplishing all perforation layers;
E. coiled tubing is proposed in production tube.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Aforesaid abrasive perforating fracturing process; Wherein said abrasive perforating device comprises a body and nozzle, and the upper end of body is a link; The lower end forms blind end; Said body is that external diameter is the cylindrical tube of 24.5～59cm, and body upper edge circumference is evenly distributed with 2～4 nozzle connecting holes, and nozzle is threaded with the nozzle connecting hole.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Aforesaid abrasive perforating fracturing process, the blind end of the lower end of wherein said body forms through the body plug that the outer end is cambered surface that is threaded.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Aforesaid abrasive perforating fracturing process, wherein said nozzle connecting hole is 2, on circumference, is 180 degree and distributes.
Compared with prior art, beneficial effect of the present invention is:
Abrasive perforating fracturing process of the present invention directly is lowered to the abrasive perforating device from production tube and carries out the abrasive perforating fracturing work; Reduced process procedure; Can produce after tripping out the abrasive perforating device, needn't carry out being lowered to production tube again after the kill job, avoid injury reservoir.Adopt dismountable plug, be convenient to cleaning, avoided the injury of abrasive perforating device is reached, avoided reducing the effect of abrasive perforating device.
Description of drawings
Fig. 1 is the external structure sketch map of the abrasive perforating device of abrasive perforating fracturing process use of the present invention;
Fig. 2 cuts open figure for the A-A of Fig. 1;
Fig. 3 cuts open figure for the B-B of Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail, but not as to qualification of the present invention.
The abrasive perforating fracturing process comprises the steps:
The coiled tubing that a. will be connected with the abrasive perforating device passes arrival construction target zone in production tube; Concrete steps comprise:
(a1) in advance production tube is lowered into projected depth, carries out tubing hanger, production tube commonly used is of a size of 2.875 " or 3.5 ";
(a2) christmas tree and ground pressure break pipeline are installed;
(a3) coiled tubing injection head is installed, and coiled tubing is connected to pump truck;
(a4) the abrasive perforating device is connected to coiled tubing;
(a5) from production tube, coiled tubing is lowered to target zone, the circulation limit, discharge capacity limit with 20L/min is lowered to coiled tubing therebetween, until coiled tubing to the first perforation layer.
B. the first perforation layer being carried out abrasive perforating finishes until annular space sand fracturing construction; Concrete steps comprise:
(b1) carry out abrasive perforating with the discharge capacity of 300～500L/min, perforation quantity is formulated according to FRACTURING DESIGN;
(b2) after abrasive perforating finishes, squeeze fracturing fluid with the fracturing unit truck examination, confirm that perforation is accomplished after, on carry coiled tubing to production tube, close the coiled tubing preventer;
(b3) between production tube and sleeve pipe, carry out the annular space sand fracturing, coiled tubing keeps the discharge capacity of 20L/min simultaneously;
(b4) layer is changeed in back-up sand, carries out the segmentation of sand plug by the amount of design to owe to replace;
C. coiled tubing is put to the second perforation layer, the second perforation layer is carried out abrasive perforating finish until annular space sand fracturing construction;
The second perforation layer is carried out abrasive perforating until annular space sand fracturing concrete steps be repeating step (b1)～(b4).
D. coiled tubing is put to new perforation layer, repeating step (b1)～(b4) is so until the sand fracturing of accomplishing all layers;
Last perforation layer is carried out abrasive perforating after annular space sand fracturing construction finishes, trip out coiled tubing, lay down the abrasive perforating device, install the sand washing joint, be lowered to sand washing again, auxiliary fracturing fluid recovery (backflow) to the shaft bottom.
E. coiled tubing is proposed in production tube.
After abrasive perforating fracturing process of the present invention construction finished, promptly fracturing fluid recovery (backflow) just can carry out production operation after finishing coiled tubing proposed in the production tube.Do not need to carry out again kill job, reduced working link.Avoided simultaneously causing reservoir damage caused because of kill-job.
The inventive method main feature is; Directly be lowered to the abrasive perforating device and carry out the abrasive perforating fracturing work from production tube; Can produce after tripping out the abrasive perforating device, reduce the process procedure that must carry out kill job in the existing method, avoid injury reservoir.
To shown in Figure 3, Fig. 1 is the external structure sketch map of the abrasive perforating device of abrasive perforating fracturing process use of the present invention like Fig. 1; Fig. 2 cuts open figure for the A-A of Fig. 1; Fig. 3 cuts open figure for the B-B of Fig. 2.The abrasive perforating device that abrasive perforating fracturing process of the present invention uses comprises a body 1 and nozzle 5, and the upper end of body 1 is a link 2, and the lower end of body 1 forms blind end through the plug 3 that the outer end that is threaded is cambered surface.Adopt dismountable plug 3 to form blind end, be convenient to cleaning, avoided injury, and avoided effect because of reduction abrasive perforating devices such as dirt obstructions to the abrasive perforating device.The plug 3 that the outer end is cambered surface also can play the effect of starting taper simultaneously, is convenient to be lowered to operation.Said body 1 is the cylindrical tube of 24.5～59cm for external diameter, and body 1 upper edge circumference is evenly distributed with 2～4 nozzle connecting holes 4, and nozzle 5 is threaded with nozzle connecting hole 4.Nozzle 5 and body 1 can cooperate different nozzles, and when nozzle damages, can change nozzle for removably connecting, and have avoided damage owing to nozzle to cause whole abrasive perforating device to be discarded and have caused waste.The external diameter of body 1 is preferably 25～35cm, and nozzle connecting hole 4 is preferably 2.Abrasive perforating device of the present invention adopts existing pump group can satisfy the requirement of its flow and pressure.And can be used with flow string, carry out the abrasive perforating fracturing work, reduce the step of abrasive perforating fracturing work, avoid injury reservoir.
Above embodiment is merely exemplary embodiment of the present invention, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the present invention in essence of the present invention and protection domain, this modification or be equal to replacement and also should be regarded as dropping in protection scope of the present invention.
Claims (4)
1. the abrasive perforating fracturing process is characterized in that, comprises the steps:
The coiled tubing that a. will be connected with the abrasive perforating device passes arrival construction target zone in production tube;
B. the first perforation layer being carried out abrasive perforating finishes until annular space sand fracturing construction;
C. carry coiled tubing to new perforation layer on, new perforation layer is carried out abrasive perforating finish until annular space sand fracturing construction;
D. repeating step c is until the sand fracturing of accomplishing all perforation layers;
E. coiled tubing is proposed in production tube.
2. abrasive perforating fracturing process according to claim 1 is characterized in that, described abrasive perforating device; Comprise a body and nozzle; The upper end of body is a link, and the lower end forms blind end, and said body is that external diameter is the cylindrical tube of 24.5～59cm; Body upper edge circumference is evenly distributed with 2～4 nozzle connecting holes, and nozzle is threaded with the nozzle connecting hole.
3. abrasive perforating fracturing process according to claim 2 is characterized in that, the blind end of the lower end of said body forms through the body plug that the outer end is cambered surface that is threaded.
4. abrasive perforating fracturing process according to claim 2 is characterized in that, said nozzle connecting hole is 2, on circumference, is 180 degree and distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106119868A CN102562017A (en) | 2010-12-29 | 2010-12-29 | Sand blasting, perforating and fracturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106119868A CN102562017A (en) | 2010-12-29 | 2010-12-29 | Sand blasting, perforating and fracturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102562017A true CN102562017A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106119868A Pending CN102562017A (en) | 2010-12-29 | 2010-12-29 | Sand blasting, perforating and fracturing method |
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| CN (1) | CN102562017A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733794A (en) * | 2012-07-23 | 2012-10-17 | 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 | Method for exploring sand surfaces by trying to squeeze sand compartments |
| CN102748001A (en) * | 2012-07-24 | 2012-10-24 | 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 | Hydraulic sand-blasting, perforating, sand-filling, layering and fracturing technology for continuous oil pipe |
| CN102777156A (en) * | 2012-07-20 | 2012-11-14 | 中国石油化工股份有限公司 | Fracturing method for multi-interval oil and gas wells |
| CN102852507A (en) * | 2012-08-09 | 2013-01-02 | 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 | Accurate sand-filling layered optimization design method for continuous oil pipe |
| CN104213890A (en) * | 2013-06-03 | 2014-12-17 | 中国石油天然气股份有限公司 | Coiled tubing fracturing string and fracturing process |
| CN104695927A (en) * | 2015-01-27 | 2015-06-10 | 中国石油天然气股份有限公司 | Coiled tubing and production tubing combined string fracturing and well completion integrated method |
| CN106917610A (en) * | 2017-05-11 | 2017-07-04 | 中国石油集团川庆钻探工程有限公司 | Multi-cluster sand blasting perforation sand-filling pipe column and sand-filling temporary plugging staged fracturing method |
| CN107989567A (en) * | 2018-01-16 | 2018-05-04 | 江苏航天鸿鹏数控机械有限公司 | Jet-preventing tool in a kind of abrasive perforating |
| CN112282718A (en) * | 2020-11-05 | 2021-01-29 | 中国石油天然气股份有限公司 | Combined pipe string for sidetracking well and slim hole well and use method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777156A (en) * | 2012-07-20 | 2012-11-14 | 中国石油化工股份有限公司 | Fracturing method for multi-interval oil and gas wells |
| CN102733794A (en) * | 2012-07-23 | 2012-10-17 | 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 | Method for exploring sand surfaces by trying to squeeze sand compartments |
| CN102733794B (en) * | 2012-07-23 | 2015-07-29 | 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 | A kind of method of being squeezed sand plug spy sand face by examination |
| CN102748001B (en) * | 2012-07-24 | 2015-06-17 | 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 | Hydraulic sand-blasting, perforating, sand-filling, layering and fracturing technology for continuous oil pipe |
| CN102748001A (en) * | 2012-07-24 | 2012-10-24 | 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 | Hydraulic sand-blasting, perforating, sand-filling, layering and fracturing technology for continuous oil pipe |
| CN102852507A (en) * | 2012-08-09 | 2013-01-02 | 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 | Accurate sand-filling layered optimization design method for continuous oil pipe |
| CN102852507B (en) * | 2012-08-09 | 2015-04-08 | 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 | Accurate sand-filling layered optimization design method for continuous oil pipe |
| CN104213890B (en) * | 2013-06-03 | 2016-12-28 | 中国石油天然气股份有限公司 | Coiled tubing fracturing process |
| CN104213890A (en) * | 2013-06-03 | 2014-12-17 | 中国石油天然气股份有限公司 | Coiled tubing fracturing string and fracturing process |
| CN104695927A (en) * | 2015-01-27 | 2015-06-10 | 中国石油天然气股份有限公司 | Coiled tubing and production tubing combined string fracturing and well completion integrated method |
| CN104695927B (en) * | 2015-01-27 | 2017-07-07 | 中国石油天然气股份有限公司 | Coiled tubing and production tubing combined string fracturing and well completion integrated method |
| CN106917610A (en) * | 2017-05-11 | 2017-07-04 | 中国石油集团川庆钻探工程有限公司 | Multi-cluster sand blasting perforation sand-filling pipe column and sand-filling temporary plugging staged fracturing method |
| CN107989567A (en) * | 2018-01-16 | 2018-05-04 | 江苏航天鸿鹏数控机械有限公司 | Jet-preventing tool in a kind of abrasive perforating |
| CN107989567B (en) * | 2018-01-16 | 2024-02-20 | 江苏航天鸿鹏数控机械有限公司 | Anti-blowout tool in sand blasting perforation |
| CN112282718A (en) * | 2020-11-05 | 2021-01-29 | 中国石油天然气股份有限公司 | Combined pipe string for sidetracking well and slim hole well and use method |
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Application publication date: 20120711 |