CN107401389A - A kind of method for spraying steel ball under erosion processing well - Google Patents
A kind of method for spraying steel ball under erosion processing well Download PDFInfo
- Publication number
- CN107401389A CN107401389A CN201710651452.XA CN201710651452A CN107401389A CN 107401389 A CN107401389 A CN 107401389A CN 201710651452 A CN201710651452 A CN 201710651452A CN 107401389 A CN107401389 A CN 107401389A
- Authority
- CN
- China
- Prior art keywords
- steel ball
- injection
- erosion
- coiled tubing
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 230000003628 erosive effect Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 title claims abstract description 19
- 238000005507 spraying Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims description 45
- 239000007924 injection Substances 0.000 claims description 45
- 239000012530 fluid Substances 0.000 claims description 22
- 238000001802 infusion Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 11
- 239000006004 Quartz sand Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 5
- 244000007835 Cyamopsis tetragonoloba Species 0.000 claims description 4
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- -1 hydroxypropyl Chemical group 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims 1
- 210000000664 rectum Anatomy 0.000 abstract description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003672 processing method Methods 0.000 description 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/03—Freeing by flushing
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a kind of method for spraying steel ball under erosion processing well, using abradant jet mode, erosion is sprayed downwards along pit shaft axis meets the steel ball blocked and the contact position of steel ball and ball seat, latus rectum in ball seat is expanded by erosion or reduces steel ball internal diameter, so as to release constraint of the ball seat to steel ball, it is set voluntarily to return to ground under the lifting of liquid in well, this method can increase substantially operating efficiency and process safety is horizontal.
Description
Technical field
The invention belongs to exploration of oil and gas field and development technique field, and in particular to a kind of to spray steel ball under erosion processing well
Method, it is suitable for meeting each sized solid steel ball of card and other metal material medicine balls under processing well.
Background technology
Steel ball is a kind of conventional downhole tool annex in oil-gas field development field, and its major function is to open upper strata and go out liquid to lead to
Road, closing lower floor feed pathway.In operation process, because the heating of the squeezing action of long-time highly pressurised liquid, formation temperature is made
Cooling effect with, entry well fluid etc., steel ball is stuck on ball seat, i.e., can not be descending along pipe, can not in well liquid support
Lift up in lower edge pipe until returning out ground.
The existing mainly method by meeting steel-fastening ball under two kinds of processing wells：
First, by tripping in continuous tubing drill grinds tool pipe string in oil pipe or in sleeve pipe, brill mill is carried out to steel ball, until steel ball is thorough
Subdrilling, which is removed or bored, to be milled to steel ball and is not constrained by ball seat（Ball seat only limits steel ball and continued traveling downwardly）；
Second, by annular space lift mode, increase annular space energy, so as to increase the upper top power for meeting steel-fastening ball bottom, upper top steel
Ball promotes its unfreezing.
But the first processing method has its limitation, bore mill steel ball and bouncing of drilling tool easily occur, bore mill for a long time to no effect etc. often
See unusual service condition；The effect of second of processing method depends on the factor such as tubing and casing bearing capacity, strata pressure, effect often compared with
Difference.
The content of the invention
The purpose of the present invention is to overcome above-mentioned technical problem existing for prior art, there is provided one kind is easy to Field Force to grasp
With met under the injection erosion processing well of operation card, can not voluntarily on the construction method of steel ball returned.
Technical scheme provided by the invention is as follows：
A kind of method for spraying steel ball under erosion processing well, comprises the following steps：
Step 1：Check and coiled tubing and injection erosion instrument are connected into composition injection erosion tool string from top to bottom, afterwards
Enter well；
Step 2：Coiled tubing is sent downwards and arrives steel ball until visiting, and records steel ball depth, it is preliminary to detect steel ball position, then
Above carry coiled tubing and arrive steel ball position above 2-3m to visiting, direct flushing is washed till inlet and outlet water colour unanimously and nothing in returning fluid
Termination of pumping after solid impurity particle, and record tubing string suspending weight and pump pressure；
Step 3：Turn on pump circulates and transfers coiled tubing, determines steel ball position；
When turn on pump circulate and transfer coiled tubing cause spray erosion instrument lower surface contradict arrive steel ball when, steel ball position determination
Following three conditions need to be met simultaneously：
1）Pump pressure now is more than the pump pressure that records in step 2, and with continuing to give brills, pump pressure rise at least 2MPa；2）Injection
The lower surface depth of erosion instrument is consistent with the steel ball depth that step 2 records；3）Tubing string suspending weight is less than step 2 record
Tubing string suspending weight, and difference is less than 0.5t；
Step 4：After determining steel ball position, continue to be sent into coiled tubing, until the pressure of the drill being carried on steel ball is 2-3t；
Step 5：The injection liquid of infusion at least one coiled tubing internal volume, regulation infusion discharge capacity make the fluid of arrival steel ball surface
Speed is not less than 150m/s, and 60% of ground pump pressure less than coiled tubing internal pressure strength；
Step 6：The mulling liquid of at least 2 times coiled tubing internal volumes of infusion, regulation infusion discharge capacity make the fluid of arrival steel ball surface
Speed is not less than 150m/s, carries out injection erosion, after mulling liquid pump is noted, replaces the spray of at least one coiled tubing internal volume
Liquid is penetrated, discharge capacity is less than the infusion discharge capacity of mulling liquid, then injection liquid is replaced with clear water and entered by injection with sand all for annular space
Row direct flushing, well-flushing fluid volume are no less than 2 times of hole volume, wait to be washed till inlet and outlet water colour unanimously and in returning fluid without solid
Body impurity particle；
Step 7：Termination of pumping, rise to spray erosion tool string.
The injection erosion instrument includes 1 axial nozzle being sequentially connected from bottom to up and multiple oblique nozzles, described
Open Side Down for axial nozzle, and multiple oblique nozzle openings are obliquely.
The coiled tubing internal volume is the volume that erosion instrument above coiled tubing is sprayed below well head.
The injection liquid is formulated by tackifier and clear water, and the mass percentage concentration of tackifier is more than 3.5%, sprays liquid
Viscosity is not less than 30mPa.s.
The mulling liquid is injection liquid and the mixture of quartz sand, and the injection liquid is formulated by tackifier and clear water,
The mass percentage concentration of tackifier is more than 3.5%, and injection fluid viscosity is not less than 30mPa.s, and the quartz sand concentration is not more than 170
kg/m3。
The quartz sand is 40-100 mesh.
The tackifier are powdery hydroxypropyl guar.
The beneficial effects of the invention are as follows：
The method of steel ball under this injection erosion processing well provided by the invention, using abradant jet mode, along pit shaft axis to
Steel ball and the contact position of steel ball and ball seat of card are met in lower injection erosion, are expanded latus rectum in ball seat by erosion or are reduced in steel ball
Footpath, so as to release constraint of the ball seat to steel ball, it is set voluntarily to return to ground under the lifting of liquid in well, this method can be significantly
Degree improves operating efficiency and process safety is horizontal.
It will be described in further details below.
Embodiment
Embodiment 1：
A kind of method for spraying steel ball under erosion processing well is present embodiments provided, is comprised the following steps：
Step 1：Check and coiled tubing and injection erosion instrument are connected into composition injection erosion tool string from top to bottom, afterwards
Enter well；
Step 2：Coiled tubing is sent downwards and arrives steel ball until visiting, and records steel ball depth, it is preliminary to detect steel ball position, then
Above carry coiled tubing and arrive steel ball position above 2-3m to visiting, direct flushing is washed till inlet and outlet water colour unanimously and nothing in returning fluid
Termination of pumping after solid impurity particle, and record tubing string suspending weight and pump pressure；
Step 3：Turn on pump circulates and transfers coiled tubing, determines steel ball position；
When turn on pump circulate and transfer coiled tubing cause spray erosion instrument lower surface contradict arrive steel ball when, steel ball position determination
Following three conditions need to be met simultaneously：
1）Pump pressure now is more than the pump pressure that records in step 2, and with continuing to give brills, pump pressure rise at least 2MPa；2）Injection
The lower surface depth of erosion instrument is consistent with the steel ball depth that step 2 records；3）Tubing string suspending weight is less than step 2 record
Tubing string suspending weight, and difference is less than 0.5t；
Step 4：After determining steel ball position, continue to be sent into coiled tubing, until the pressure of the drill being carried on steel ball is 2-3t；
Step 5：The injection liquid of infusion at least one coiled tubing internal volume, regulation infusion discharge capacity make the fluid of arrival steel ball surface
Speed is not less than 150m/s, and 60% of ground pump pressure less than coiled tubing internal pressure strength；
Step 6：The mulling liquid of at least 2 times coiled tubing internal volumes of infusion, regulation infusion discharge capacity make the fluid of arrival steel ball surface
Speed is not less than 150m/s, carries out injection erosion, after mulling liquid pump is noted, replaces the spray of at least one coiled tubing internal volume
Liquid is penetrated, discharge capacity is less than the infusion discharge capacity of mulling liquid, then injection liquid is replaced with clear water and entered by injection with sand all for annular space
Row direct flushing, well-flushing fluid volume are no less than 2 times of hole volume, wait to be washed till inlet and outlet water colour unanimously and in returning fluid without solid
Body impurity particle；
Step 7：Termination of pumping, rise to spray erosion tool string.
The present invention uses abradant jet mode, and injection erosion enriches well because a variety of causes is by the steel ball being stuck in ball seat
The processing method of lower steel ball, improves treatment effeciency.
Embodiment 2：
On the basis of embodiment 1, the present embodiment carries out spraying erosion processing steel ball operation to a bite horizontal well of Changqing oilfields.
The well carries out pressure break using diameter 73.02mm oil pipes+Pyatyi hydrajet tool, and diameter 44mm steel balls can not after pressure
Discharge ground is returned, judges that pressing crack construction process mesohigh extruding steel ball is stuck on ball seat, using external diameter 38.01mm coiled tubing
The injection erosion instrument connected with external diameter enters well processing and meets steel-fastening ball.
After fastening means and test passes, lower coiled tubing, it is 3850.0m to visit steel ball position, 2m is above carried, with 100L/min
Discharge capacity carry out direct flushing, be pumped 35MPa during returning fluid's continuous-stable.After well-flushing is qualified, termination of pumping, the tool depth is tested
It is 11.2t that place's coiled tubing, which above carries suspending weight,.With 100L/min discharge capacity in infusion tripping in coiled tubing, when depth of setting is
During 3850.05m, pump pressure rises to 40MPa, and suspending weight drops to 10.9t, so that it is determined that steel ball depth is 3850.0m.Steel ball pressurizes
2t。
With 200L/min discharge capacity direct circulation infusion viscosity 35mPa.s injection liquid（Guanidine glue）6m3；Liquid to be gone out is continuously steady
After fixed, start to add 40-70 mesh quartz sands, the kg/m of sand concentration 1703；The m of infusion mulling liquid 123Afterwards, stop adding sand；Continue infusion spray
Penetrate the m of liquid 63；Injection liquid is changed to clear water, the m of infusion clear water 303, the quartz sand of ground metering returns output and the basic phase of addition
When termination of pumping；Act coiled tubing.
Checking learns that steel ball position has moved down afterwards.
In the present embodiment, the injection erosion instrument includes 1 axial nozzle being sequentially connected from bottom to up and 8 oblique
To nozzle, Open Side Down for the axial nozzle, and multiple oblique nozzle openings are obliquely.
Wherein, coiled tubing internal volume is the volume that erosion instrument above coiled tubing is sprayed below well head；Spraying liquid is
Guanidine glue, it is formulated by powdery hydroxypropyl guar tackifier and clear water, the mass percentage concentration of tackifier is more than 3.5%, injection
Fluid viscosity is 35mPa.s.
Mulling liquid is injection liquid and the mixture of quartz sand, and the injection liquid is by powdery hydroxypropyl guar tackifier and clear water
It is formulated, injection fluid viscosity is 35mPa.s, and quartz sand concentration is 170 kg/m3。
The present embodiment belongs to the common knowledge and known technology of the art without the part specifically described, herein not
Another one describes in detail.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (7)
- A kind of 1. method for spraying steel ball under erosion processing well, it is characterised in that comprise the following steps：Step 1：Check and coiled tubing and injection erosion instrument are connected into composition injection erosion tool string from top to bottom, afterwards Enter well；Step 2：Coiled tubing is sent downwards and arrives steel ball until visiting, and records steel ball depth, it is preliminary to detect steel ball position, then Above carry coiled tubing and arrive steel ball position above 2-3m to visiting, direct flushing is washed till inlet and outlet water colour unanimously and nothing in returning fluid Termination of pumping after solid impurity particle, and record tubing string suspending weight and pump pressure；Step 3：Turn on pump circulates and transfers coiled tubing, determines steel ball position；When turn on pump circulate and transfer coiled tubing cause spray erosion instrument lower surface contradict arrive steel ball when, steel ball position determination Following three conditions need to be met simultaneously：1）Pump pressure now is more than the pump pressure that records in step 2, and with continuing to give brills, pump pressure rise at least 2MPa；2）Injection The lower surface depth of erosion instrument is consistent with the steel ball depth that step 2 records；3）Tubing string suspending weight is less than step 2 record Tubing string suspending weight, and difference is less than 0.5t；Step 4：After determining steel ball position, continue to be sent into coiled tubing, until the pressure of the drill being carried on steel ball is 2-3t；Step 5：The injection liquid of infusion at least one coiled tubing internal volume, regulation infusion discharge capacity make the fluid of arrival steel ball surface Speed is not less than 150m/s, and 60% of ground pump pressure less than coiled tubing internal pressure strength；Step 6：The mulling liquid of at least 2 times coiled tubing internal volumes of infusion, regulation infusion discharge capacity make the fluid of arrival steel ball surface Speed is not less than 150m/s, carries out injection erosion, after mulling liquid pump is noted, replaces the spray of at least one coiled tubing internal volume Liquid is penetrated, discharge capacity is less than the infusion discharge capacity of mulling liquid, then injection liquid is replaced with clear water and entered by injection with sand all for annular space Row direct flushing, well-flushing fluid volume are no less than 2 times of hole volume, wait to be washed till inlet and outlet water colour unanimously and in returning fluid without solid Body impurity particle；Step 7：Termination of pumping, rise to spray erosion tool string.
- A kind of 2. method for spraying steel ball under erosion processing well according to claim 1, it is characterised in that：The injection punching Erosion instrument includes 1 axial nozzle being sequentially connected from bottom to up and multiple oblique nozzles, and Open Side Down for the axial nozzle, more Individual oblique nozzle opening is obliquely.
- A kind of 3. method for spraying steel ball under erosion processing well according to claim 1, it is characterised in that：The continuous oil Pipe internal volume is the volume that erosion instrument above coiled tubing is sprayed below well head.
- A kind of 4. method for spraying steel ball under erosion processing well according to claim 1, it is characterised in that：The injection liquid It is formulated by tackifier and clear water, the mass percentage concentration of tackifier is more than 3.5%, and injection fluid viscosity is not less than 30mPa.s.
- A kind of 5. method for spraying steel ball under erosion processing well according to claim 1, it is characterised in that：The mulling liquid For injection liquid and the mixture of quartz sand, the injection liquid is formulated by tackifier and clear water, and the quality percentage of tackifier is dense Degree is more than 3.5%, and injection fluid viscosity is not less than 30mPa.s, and the quartz sand concentration is not more than 170 kg/m3。
- A kind of 6. method for spraying steel ball under erosion processing well according to claim 5, it is characterised in that：The quartz sand For 40-100 mesh.
- 7. the method for steel ball under a kind of injection erosion processing well according to claim 4 or 5, it is characterised in that：The increasing Stick is powdery hydroxypropyl guar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651452.XA CN107401389B (en) | 2017-08-02 | 2017-08-02 | A method of steel ball under injection erosion processing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651452.XA CN107401389B (en) | 2017-08-02 | 2017-08-02 | A method of steel ball under injection erosion processing well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107401389A true CN107401389A (en) | 2017-11-28 |
| CN107401389B CN107401389B (en) | 2019-06-18 |
Family
ID=60401885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710651452.XA Active CN107401389B (en) | 2017-08-02 | 2017-08-02 | A method of steel ball under injection erosion processing well |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704879A (en) * | 2012-05-15 | 2012-10-03 | 中国石油大学(华东) | Abrasive jet processing tool for downhole accidents |
| CN204571889U (en) * | 2015-04-27 | 2015-08-19 | 中国海洋石油总公司 | A kind of rotating fluid plug-removing device |
| US20150337634A1 (en) * | 2014-05-21 | 2015-11-26 | Proserv Uk Limited | Cutting tool |
| CN105804679A (en) * | 2016-02-06 | 2016-07-27 | 高伟时 | Horizontal well shaft processing process tubing string device for realizing continuous circulation by ordinary oil pipe |
| CN105952407A (en) * | 2016-06-03 | 2016-09-21 | 中国石油天然气股份有限公司 | Drilling tool stuck releasing method and stuck releasing device |
-
2017
- 2017-08-02 CN CN201710651452.XA patent/CN107401389B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704879A (en) * | 2012-05-15 | 2012-10-03 | 中国石油大学(华东) | Abrasive jet processing tool for downhole accidents |
| US20150337634A1 (en) * | 2014-05-21 | 2015-11-26 | Proserv Uk Limited | Cutting tool |
| CN204571889U (en) * | 2015-04-27 | 2015-08-19 | 中国海洋石油总公司 | A kind of rotating fluid plug-removing device |
| CN105804679A (en) * | 2016-02-06 | 2016-07-27 | 高伟时 | Horizontal well shaft processing process tubing string device for realizing continuous circulation by ordinary oil pipe |
| CN105952407A (en) * | 2016-06-03 | 2016-09-21 | 中国石油天然气股份有限公司 | Drilling tool stuck releasing method and stuck releasing device |
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| Publication number | Publication date |
|---|---|
| CN107401389B (en) | 2019-06-18 |
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Effective date of registration: 20201028 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 Changqing building, 1203 Changqing Changqing Garden area, Shaanxi, Xi'an Province Patentee before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |