CN107401389B - A method of steel ball under injection erosion processing well - Google Patents
A method of steel ball under injection erosion processing well Download PDFInfo
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- CN107401389B CN107401389B CN201710651452.XA CN201710651452A CN107401389B CN 107401389 B CN107401389 B CN 107401389B CN 201710651452 A CN201710651452 A CN 201710651452A CN 107401389 B CN107401389 B CN 107401389B
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- Prior art keywords
- steel ball
- injection
- coiled tubing
- erosion
- pump
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 238000002347 injection Methods 0.000 title claims abstract description 57
- 239000007924 injection Substances 0.000 title claims abstract description 57
- 230000003628 erosive effect Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000011010 flushing procedure Methods 0.000 claims description 11
- 239000006004 Quartz sand Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 239000007921 spray 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
- 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
- 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
- 238000005516 engineering process Methods 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
- 239000000243 solution 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 present invention provides a kind of methods of steel ball under injection erosion processing well, using abradant jet mode, erosion is sprayed downwards along pit shaft axis meets the steel ball of card and the contact position of steel ball and ball seat, expand latus rectum in ball seat by erosion or reduces steel ball internal diameter, to release constraint of the ball seat to steel ball, make it that can voluntarily 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 is suitable for meeting each sized solid steel ball of card and other metal material medicine balls under processing well.
Background technique
Steel ball is a kind of common downhole tool attachment in oil-gas field development field, and major function is to open upper layer to go out liquid logical
Lower layer's feed pathway is closed in road.In operation process, since the heating of the squeezing action of long-time highly pressurised liquid, formation temperature is made
With, cooling effect of entry well fluid etc., steel ball is stuck on ball seat, i.e., cannot along pipe downlink, can not in well liquid support
Uplink in lower edge pipe is lifted until returning out ground.
The existing mainly method by meeting steel-fastening ball under two kinds of processing wells:
First is that brill mill is carried out to steel ball by tripping in continuous tubing drill grinds tool pipe string in oil pipe or in casing, until by steel
Ball, which thoroughly bores to remove or bore, is milled to steel ball not by ball seat constraint (ball seat only limits steel ball and continues traveling downwardly)；
Second is that annular space energy is increased by annular space lift mode, thus increase the upper top power for meeting steel-fastening ball lower part, on
Top steel ball promotes its unfreezing.
But the first processing method has its limitation, bores mill steel ball and bouncing of drilling tool easily occurs, 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 factors such as tubing and casing bearing capacity, strata pressure, effect often compared with
Difference.
Summary of the invention
The purpose of the present invention is overcoming above-mentioned technical problem of the existing technology, provide a kind of convenient for Field Force's grasp
With met under the injection erosion processing well of operation card, cannot voluntarily on the construction method of steel ball returned.
Technical solution provided by the invention is as follows:
A method of steel ball under injection erosion processing well, comprising the following steps:
Step 1: checking and coiled tubing and injection erosion tool are connected composition injection erosion tool string from top to bottom,
Enter well later；
Step 2: sending downwards coiled tubing until visiting and arrive steel ball, records steel ball depth, preliminary to detect steel ball position,
Then coiled tubing is above mentioned to visiting to the above 2-3m in steel ball position, direct flushing, is washed till inlet and outlet water colour unanimously and returning fluid
Termination of pumping after middle no solid impurity particle, and record tubing string suspending weight and pump pressure；
Step 3: turn on pump recycles and transfers coiled tubing, determines steel ball position；
When turn on pump recycles and transfers coiled tubing and contradict the lower end surface for spraying erosion tool to steel ball, steel ball position
Determination need to meet following three conditions simultaneously:
1) pump pressure at this time is greater than the pump pressure that records in step 2, and with continuing to send brills, pump pressure rise at least 2MPa；2)
The lower end surface depth for spraying erosion tool is consistent with the steel ball depth that step 2 records；3) tubing string suspending weight is remembered less than step 2
The tubing string suspending weight of record, and differ and be less than 0.5t；
Step 4: after determining steel ball position, continuing to be sent into coiled tubing, until bit pressure of the load on steel ball is 2-3t；
Step 5: the injection liquid of pump note at least one coiled tubing internal volume, adjusting pump note discharge capacity makes to reach steel ball surface
Fluid velocity is not less than 150m/s, and ground pump pressure is less than the 60% of coiled tubing internal pressure strength；
Step 6: the mulling liquid of pump at least 2 times coiled tubing internal volumes of note, adjusting pump note discharge capacity makes to reach steel ball surface
Fluid velocity is not less than 150m/s, carries out injection erosion, after mulling liquid pump is infused, replaces at least one coiled tubing internal volume
Injection liquid, the pump that discharge capacity is less than mulling liquid infuses discharge capacity, injection all replaced with sand to annular space, then replace with injection liquid clearly
Water carries out direct flushing, and well-flushing fluid volume is no less than 2 times of hole volume, wait be washed till inlet and outlet water colour unanimously and in returning fluid
Without solid impurity particle；
Step 7: termination of pumping acts injection erosion tool string.
The injection erosion tool includes sequentially connected 1 axial nozzle and multiple oblique nozzles from bottom to up, described
Open Side Down for axial nozzle, and multiple oblique nozzle openings are obliquely.
The coiled tubing internal volume is the volume of well head or less the injection above coiled tubing of erosion tool.
The injection liquid is formulated by tackifier and clear water, and the mass percentage concentration of tackifier is greater than 3.5%, sprays liquid
Viscosity is not less than 30mPa.s.
The mulling liquid is the mixture for spraying liquid and quartz sand, and the injection liquid is formulated by tackifier and clear water,
The mass percentage concentration of tackifier is greater 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 present invention are:
The method of steel ball under this injection erosion processing well provided by the invention, using abradant jet mode, along pit shaft axis
Line sprays downwards erosion and meets the steel ball of card and the contact position of steel ball and ball seat, expands latus rectum in ball seat by erosion or reduces steel ball
Internal diameter makes it that can voluntarily return to ground under the lifting of liquid in well to release constraint of the ball seat to steel ball, and this method can be big
Amplitude improves operating efficiency and process safety is horizontal.
It will be described in further details below.
Specific embodiment
Embodiment 1:
Present embodiments provide a kind of method for spraying steel ball under erosion processing well, comprising the following steps:
Step 1: checking and coiled tubing and injection erosion tool are connected composition injection erosion tool string from top to bottom,
Enter well later；
Step 2: sending downwards coiled tubing until visiting and arrive steel ball, records steel ball depth, preliminary to detect steel ball position,
Then coiled tubing is above mentioned to visiting to the above 2-3m in steel ball position, direct flushing, is washed till inlet and outlet water colour unanimously and returning fluid
Termination of pumping after middle no solid impurity particle, and record tubing string suspending weight and pump pressure；
Step 3: turn on pump recycles and transfers coiled tubing, determines steel ball position；
When turn on pump recycles and transfers coiled tubing and contradict the lower end surface for spraying erosion tool to steel ball, steel ball position
Determination need to meet following three conditions simultaneously:
1) pump pressure at this time is greater than the pump pressure that records in step 2, and with continuing to send brills, pump pressure rise at least 2MPa；2)
The lower end surface depth for spraying erosion tool is consistent with the steel ball depth that step 2 records；3) tubing string suspending weight is remembered less than step 2
The tubing string suspending weight of record, and differ and be less than 0.5t；
Step 4: after determining steel ball position, continuing to be sent into coiled tubing, until bit pressure of the load on steel ball is 2-3t；
Step 5: the injection liquid of pump note at least one coiled tubing internal volume, adjusting pump note discharge capacity makes to reach steel ball surface
Fluid velocity is not less than 150m/s, and ground pump pressure is less than the 60% of coiled tubing internal pressure strength；
Step 6: the mulling liquid of pump at least 2 times coiled tubing internal volumes of note, adjusting pump note discharge capacity makes to reach steel ball surface
Fluid velocity is not less than 150m/s, carries out injection erosion, after mulling liquid pump is infused, replaces at least one coiled tubing internal volume
Injection liquid, the pump that discharge capacity is less than mulling liquid infuses discharge capacity, injection all replaced with sand to annular space, then replace with injection liquid clearly
Water carries out direct flushing, and well-flushing fluid volume is no less than 2 times of hole volume, wait be washed till inlet and outlet water colour unanimously and in returning fluid
Without solid impurity particle；
Step 7: termination of pumping acts injection erosion tool string.
The present invention uses abradant jet mode, sprays erosion because a variety of causes is by the steel ball being stuck in ball seat, enriches well
The processing method of lower steel ball, improves treatment effeciency.
Embodiment 2:
On the basis of embodiment 1, the present embodiment carries out injection erosion processing steel ball to a bite horizontal well of Changqing oilfields
Operation.
The well carries out pressure break using diameter 73.02mm oil pipe+Pyatyi hydrajet tool, and diameter 44mm steel ball can not after pressure
Discharge ground is returned, judges that pressing crack construction process mesohigh squeezes steel ball and is stuck on ball seat, using the coiled tubing of outer diameter 38.01mm
The injection erosion tool connected with outer diameter enters well processing chance steel-fastening ball.
After fastening means and test passes, lower coiled tubing, spy steel ball position is 3850.0m, mentions 2m, above with 100L/min
Discharge capacity carry out direct flushing, when returning fluid's continuous-stable, is pumped 35MPa.After well-flushing is qualified, the tool depth is tested in termination of pumping
It is 11.2t that place's coiled tubing, which above mentions suspending weight,.With the discharge capacity of 100L/min in Beng Zhu tripping in coiled tubing, when depth of setting is
When 3850.05m, pump pressure rises to 40MPa, and suspending weight falls to 10.9t, so that it is determined that steel ball depth is 3850.0m.Steel ball pressurization
2t。
With injection liquid (guanidine glue) 6m of the discharge capacity direct circulation pump note viscosity 35mPa.s of 200L/min3；Liquid to be gone out is continuously steady
After fixed, start to add 40-70 mesh quartz sand, 170 kg/m of sand concentration3；Pump note 12 m of mulling liquid3Afterwards, stop adding sand；Continue pump note spray
Penetrate 6 m of liquid3；Injection liquid is changed to clear water, pump note 30 m of clear water3, the quartz sand of ground metering returns output and the basic phase of additional amount
When termination of pumping；Act coiled tubing.
Verifying learns that steel ball position has moved down afterwards.
In the present embodiment, the injection erosion tool is oblique including sequentially connected 1 from bottom to up axial nozzle and 8
To nozzle, Open Side Down for the axial direction nozzle, and multiple oblique nozzle openings are obliquely.
Wherein, coiled tubing internal volume is the volume of well head or less the injection above coiled tubing of erosion tool；Spraying liquid is
Guanidine glue is formulated by powdery hydroxypropyl guar tackifier and clear water, and the mass percentage concentration of tackifier is greater than 3.5%, injection
Fluid viscosity is 35mPa.s.
Mulling liquid is the mixture for spraying liquid and 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 part that the present embodiment does not specifically describe belongs to the common knowledge and well-known technique of the art, herein not
Another one is described in detail.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (7)
1. a kind of method of steel ball under injection erosion processing well, which comprises the following steps:
Step 1: checking and coiled tubing and injection erosion tool are connected composition injection erosion tool string from top to bottom, later
Enter well；
Step 2: sending downwards coiled tubing until visiting and arrive steel ball, records steel ball depth, preliminary to detect steel ball position, then
Coiled tubing is above mentioned to visiting to the above 2-3m in steel ball position, 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 recycles and transfers coiled tubing, determines steel ball position；
The determination of steel ball position need to meet following three conditions simultaneously, that is, when turn on pump recycles and transfers coiled tubing injection be rushed
When the lower end surface of erosion tool is contradicted to steel ball:
1) pump pressure at this time is greater than the pump pressure that records in step 2, and with continuing to send brills, pump pressure rise at least 2MPa；2) it sprays
The lower end surface depth of erosion tool 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 differ and be less than 0.5t；
Step 4: after determining steel ball position, continuing to be sent into coiled tubing, until bit pressure of the load on steel ball is 2-3t；
Step 5: the injection liquid of pump note at least one coiled tubing internal volume, adjusting pump note discharge capacity makes the fluid for reaching steel ball surface
Speed is not less than 150m/s, and ground pump pressure is less than the 60% of coiled tubing internal pressure strength；
Step 6: the mulling liquid of pump at least 2 times coiled tubing internal volumes of note, adjusting pump note discharge capacity makes the fluid for reaching steel ball surface
Speed is not less than 150m/s, carries out injection erosion, after mulling liquid pump is infused, replaces the spray of at least one coiled tubing internal volume
Penetrate liquid, the pump that discharge capacity is less than mulling liquid infuses discharge capacity, injection is all replaced with sand to annular space, then will injection liquid replace with clear water into
Row direct flushing, well-flushing fluid volume are no less than 2 times of hole volume, wait be washed till inlet and outlet water colour unanimously and in returning fluid without solid
Body impurity particle；
Step 7: termination of pumping acts injection erosion tool string.
2. the method for steel ball under a kind of injection erosion processing well according to claim 1, it is characterised in that: the injection punching
Erosion tool includes sequentially connected 1 axial nozzle and multiple oblique nozzles from bottom to up, and Open Side Down for the axial direction nozzle, more
A oblique nozzle opening is obliquely.
3. the method for steel ball under a kind of injection erosion processing well according to claim 1, it is characterised in that: the continuous oil
Pipe internal volume be well head or less with it is more than injection erosion tool between coiled tubing volume.
4. the method for steel ball under a kind of injection 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 greater than 3.5%, and injection fluid viscosity is not less than 30mPa.s.
5. the method for steel ball under a kind of injection erosion processing well according to claim 1, it is characterised in that: the mulling liquid
For the mixture for spraying liquid and quartz sand, the injection liquid is formulated by tackifier and clear water, and the quality percentage of tackifier is dense
Degree is greater 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。
6. the method for steel ball under a kind of injection 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 |
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| Publication Number | Publication Date |
|---|---|
| CN107401389A CN107401389A (en) | 2017-11-28 |
| CN107401389B true CN107401389B (en) | 2019-06-18 |
Family
ID=60401885
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| Application Number | Title | Priority Date | Filing Date |
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| 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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Citations (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201409046D0 (en) * | 2014-05-21 | 2014-07-02 | Proserv Uk Ltd | Downhole cutting tool |
-
2017
- 2017-08-02 CN CN201710651452.XA patent/CN107401389B/en active Active
Patent Citations (4)
| 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 |
| 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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| CN107401389A (en) | 2017-11-28 |
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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. |