CN107035338A - Annular space is counter notes backward extrusion blocking method for a kind of fine sand leak stopping slurry - Google Patents
Annular space is counter notes backward extrusion blocking method for a kind of fine sand leak stopping slurry Download PDFInfo
- Publication number
- CN107035338A CN107035338A CN201710333423.9A CN201710333423A CN107035338A CN 107035338 A CN107035338 A CN 107035338A CN 201710333423 A CN201710333423 A CN 201710333423A CN 107035338 A CN107035338 A CN 107035338A
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- China
- Prior art keywords
- leak stopping
- fine sand
- annular space
- counter
- backward extrusion
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
Abstract
The invention provides a kind of fine sand leak stopping slurry, annular space is counter notes backward extrusion blocking method, to different leakage channel strong adaptabilities, improves matching capacity of the Lou agent to leakage channel, can squeeze into different leakage channels；Fine sand in leak stopping slurry is easily accumulated in crack, and high intensity leak stopping wall is formed after squeeze seal, is difficult leakage recurrence.Backward extrusion is noted from annular space is counter, because the presence of drilling tool in well reduces leak stopping slurry scope of activities, forces leak stopping slurry to be easier to enter in drop ply.Empty anti-note backward extrusion more meets the characteristics of high density fine sand leak stopping slurry gravity sinks, and slurry sinking watching can be freely accessible to drop ply, then be extruded by closing well, force more leak stopping slurries to enter in drop ply.
Description
Technical field
The invention belongs to petroleum drilling technology field, and in particular to annular space is counter notes backward extrusion leak stopping side for a kind of fine sand leak stopping slurry
Method.
Background technology
Long celebrating Xifeng Oilfield Jurassic system Luo He groups buried depth of strata is 700~1100m, and vertically and horizontally fracture development is good,
Partial loss well pressurization sealing effect is undesirable, and main drop ply position is difficult judgement, part bulky grain sealing agent can not be by boring
Have hydrophthalmia or deposit to shaft bottom, it is impossible to be efficiently entering in drop ply, squeeze seal pressure can not intuitively react annular pressure.
1st, partial loss leakage layer is more, and is difficult accurately to judge position
Multiple leakage occurs for partial loss well, and leak position is difficult to determine, so being difficult to determine deeply under drilling tool, often bores
Sealing agent sedimentation bottom after just being squeezed after the lower leakage layer of tool；Or drilling tool more than drop ply away from too far away, plug is formed after squeeze seal in pit shaft
Section, leak stopping slurry cannot be introduced into drop ply, form high pressure illusion.
2nd, existing conventional sealing agent bearing capacity is weak
Loss circulation material used at present has the coarse granule leak stopping such as the agent of fiber-like pons hematoma, solidification cement sealing agent, apricot Hooke
Agent, and the common determination that these sealing agents are present is exactly that intensity is weaker, is deformed after easily being acted on by external force or broken.
3rd, positive injection forward extrusion blocking method existing defects
Positive injection forward extrusion blocking method is typically used under drilling tool to drop ply above position, because pit shaft holds so during squeeze seal
Product is big, and leak stopping slurry scope of activities is wide, and most sealing agents are precipitated to shaft bottom after squeeze seal, and sealing agent utilization rate is low, causes squeeze seal leak stopping
Effect is not good.
The content of the invention
The purpose of the present invention is to overcome the above-mentioned problems in the prior art, it is proposed that one kind is applied to Xifeng Oilfield Lip river
The large-scale absorption well leak-stopping technique of river group.
The technical scheme that the present invention is provided is as follows：
Annular space is counter notes backward extrusion blocking method for a kind of fine sand leak stopping slurry, comprises the following steps：
Step 1）To more than whole drop ply positions 10 meters under polish drill rod, after being connected at drilling pump and kill manifold, fine sand is blocked up
Spillage is at the uniform velocity pumped to annular space；
Step 2）Fine sand leak stopping stock pump is sent after end, drilling pump is connected with mineshaft annulus by kill manifold, and remove drilling well
The upper water valve of two of pump, retains the upper water valve of middle one, and adjustment is pumped into discharge capacity to 0.6-0.7m3/ min, closing well starts
Annular space is counter to note backward extrusion；
Step 3）Annular space is counter note backward extrusion during polish drill rod it is motionless, record squeeze into fine sand leak stopping slurry amount, opened every 10-15 minutes
Well activity polish drill rod 3-5 minutes, afterwards annular space backward extrusion again；
Step 4）Noted by the way that the multiple annular space of batch (-type) is counter after backward extrusion, if casing pressure is raised steadily, and voltage stabilizing in 4-6mpa up to 1 minute
More than, after 10 minutes pressure drop be less than 1mpa, as extrude leak stopping success, complete leak stopping, otherwise continue extrude to extruding leak stopping into
Work(.
The fine sand leak stopping slurry is by Macromolecule glue elasticity sealing agent GD-3, blanc fixe, bridging plug agent, fine sand and water group
Into；
Wherein, Macromolecule glue elasticity sealing agent GD-3 accounts for the 1% of water weight, and blanc fixe accounts for the 15% of water weight, and bridging plug agent is accounted for
The 10 ~ 15% of water weight, fine sand accounts for the 30% of water weight.
Step 3）Described in movable polish drill rod include lifting polish drill rod up and down and horizontally rotate polish drill rod, drill finish is lifted up and down
The speed of bar is 8-15m/min, horizontally rotates polish drill rod by rotating drilling well brill disk, rotating speed is 60-90r/min.
The bridging plug agent is the mixing composite being made up of in any proportion cotton seed hulls, acute end, Pericarppium Armeniacae Amarum, mica sheet,
Particle size range 20-5 mesh.
The blanc fixe particle size range 20-200 mesh.
The fine sand is hard yellow ground for building, 2-3 millimeters of granularity.
The preparation process of fine sand leak stopping slurry is：Three point two of the total amount that discharged water in slurry commanding tank, starts stirring on slurry commanding tank
Mix device, remaining 1/3rd water by pump by waterpower mixing hopper in slurry commanding tank interior circulation, and sequentially add the high score of formula ratio
Sub- gel elastomer sealing agent GD-3, blanc fixe, bridging plug agent, fine sand, after stirring.
The beneficial effects of the invention are as follows：
1. pair different leakage channel strong adaptability：High power capacity, the multistage solid phase material matched somebody with somebody, improve Lou agent to leakage channel
Matching capacity, can be squeezed into different leakage channels.
2. leak stopping intensity is high：Fine sand in leak stopping slurry is easily accumulated in crack, and high intensity leak stopping wall is formed after squeeze seal, is difficult
Leakage recurs.
3. noting backward extrusion from annular space is counter, because the presence of drilling tool in well reduces leak stopping slurry scope of activities, leak stopping is forced to be starched
Easily enter in drop ply.
4. annular space is counter to be noted backward extrusion and more meet the characteristics of high density fine sand leak stopping slurry gravity sinks, slurry sinking watching can be with
Drop ply is freely accessible to, then is extruded by closing well, forces more leak stopping slurries to enter in drop ply.
It will be described in further details below.
Embodiment
Embodiment 1：
Present embodiments provide a kind of fine sand leak stopping slurry annular space is counter and note backward extrusion blocking method, comprise the following steps：
Step 1）To more than whole drop ply positions 10 meters under polish drill rod, after being connected at drilling pump and kill manifold, fine sand is blocked up
Spillage is at the uniform velocity pumped to annular space；
Step 2）Fine sand leak stopping stock pump is sent after end, drilling pump is connected with mineshaft annulus by kill manifold, and remove drilling well
The upper water valve of two of pump, retains the upper water valve of middle one, and adjustment is pumped into discharge capacity to 0.6-0.7m3/ min, closing well starts
Annular space is counter to note backward extrusion；
Step 3）Annular space is counter note backward extrusion during polish drill rod it is motionless, record squeeze into fine sand leak stopping slurry amount, opened every 10-15 minutes
Well activity polish drill rod 3-5 minutes, afterwards annular space backward extrusion again；
Step 4）Noted by the way that the multiple annular space of batch (-type) is counter after backward extrusion, if casing pressure is raised steadily, and voltage stabilizing in 4-6mpa up to 1 minute
More than, after 10 minutes pressure drop be less than 1mpa, as extrude leak stopping success, complete leak stopping, otherwise continue extrude to extruding leak stopping into
Work(.
After leak stopping success, drive a well normal discharge capacity direct circulation, can also while removing fine sand leak stopping slurry unnecessary in pit shaft
Wastage is monitored, wastage is less than 5m3/ h, that is, reach leak stopping purpose, and trip-out tripping in drill bit continues to creep into.
Wherein, the purpose of activity polish drill rod of driving a well is activation annular space fine sand leak stopping slurry, at the same also destroy borehole wall closure door and
Phenomenon of the annular space into plug section.Because the presence of drilling tool in well reduces leak stopping slurry scope of activities, therefore anti-note is instead squeezed using annular space
Pressure, forces leak stopping slurry to be easier to enter in drop ply；And annular space it is counter note backward extrusion more meet the leak stopping of high density fine sand slurry gravity under
Heavy the characteristics of, slurry sinking watching can be freely accessible to drop ply, then be extruded by closing well, force more leak stopping slurries to enter leakage
In layer.
Embodiment 2：
On the basis of embodiment 1, present embodiments provide a kind of fine sand leak stopping slurry annular space is counter and note backward extrusion blocking method, step
3）Described in movable polish drill rod include lifting polish drill rod up and down and horizontally rotate polish drill rod, the speed that polish drill rod is lifted up and down is 8-
15m/min, horizontally rotates polish drill rod, rotating speed is 60-90r/min by rotating drilling well brill disk.
Embodiment 3：
On the basis of embodiment 1, the fine sand leak stopping slurry is by Macromolecule glue elasticity sealing agent GD-3, blanc fixe, bridging plug
Agent, fine sand and water composition；
Wherein, Macromolecule glue elasticity sealing agent GD-3 accounts for the 1% of water weight, and blanc fixe accounts for the 15% of water weight, and bridging plug agent is accounted for
The 10 ~ 15% of water weight, fine sand accounts for the 30% of water weight.
Fine sand leak stopping slurry preparation process be：Three point two of the total amount that discharged water in slurry commanding tank, starts the agitator on slurry commanding tank,
Remaining 1/3rd water by pump by waterpower mixing hopper in slurry commanding tank interior circulation, and sequentially add the high-molecular gel of formula ratio
Elastic sealing agent GD-3, blanc fixe, bridging plug agent, fine sand, after stirring.
Macromolecule glue elasticity sealing agent GD-3, which has, improves system viscosity and shear force effect, is commercially available prod, relative point
Son amount 750-850 ten thousand, manufacturer is the wide petrochemical industry Co., Ltd of North China oil, and the effect of blanc fixe is that raising system is close
Degree, strengthens suspending power, the effect of bridging plug agent is suspension fine sand, closure drop ply, and the effect of fine sand is filling crack.
Wherein, the bridging plug agent is that the mixing being made up of in any proportion cotton seed hulls, acute end, Pericarppium Armeniacae Amarum, mica sheet is combined
Material, particle size range 20-5 mesh.
The blanc fixe particle size range 20-200 mesh.
The fine sand is hard yellow ground for building, 2-3 millimeters of granularity.
There are within 2016 2 mouthfuls of oil wells in the case where conventional bridging plug and gel leak stopping slurry pressurization sealing are invalid, carried out fine sand
Annular space is counter notes backward extrusion plugging test for leak stopping slurry, implements this technique 4 times, success rate achieves good plugging effect up to 75%.
Scene shows to improve the large-scale absorption well leak stopping success rate of Xifeng Oilfield Luo He groups, is that effective solution Xifeng Oilfield Luo He groups are large-scale
The leak-stopping technique of absorption well most.
The part and structure that above example is not described in detail belong to the well-known components and common structure or conventional of the industry
Means, are not described one by one here.
It is exemplified as above be only to the present invention for example, do not constitute 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)
1. a kind of fine sand leak stopping is starched, annular space is counter to note backward extrusion blocking method, it is characterised in that comprise the following steps：
Step 1）To more than whole drop ply positions 10 meters under polish drill rod, after being connected at drilling pump and kill manifold, fine sand is blocked up
Spillage is at the uniform velocity pumped to annular space；
Step 2）Fine sand leak stopping stock pump is sent after end, drilling pump is connected with mineshaft annulus by kill manifold, and remove drilling well
The upper water valve of two of pump, retains the upper water valve of middle one, and adjustment is pumped into discharge capacity to 0.6-0.7m3/ min, closing well starts
Annular space is counter to note backward extrusion；
Step 3）Annular space is counter note backward extrusion during polish drill rod it is motionless, record squeeze into fine sand leak stopping slurry amount, opened every 10-15 minutes
Well activity polish drill rod 3-5 minutes, afterwards annular space backward extrusion again；
Step 4）Noted by the way that the multiple annular space of batch (-type) is counter after backward extrusion, if casing pressure is raised steadily, and voltage stabilizing in 4-6mpa up to 1 minute
More than, after 10 minutes pressure drop be less than 1mpa, as extrude leak stopping success, complete leak stopping, otherwise continue extrude to extruding leak stopping into
Work(.
2. a kind of fine sand leak stopping according to claim 1 is starched, annular space is counter to note backward extrusion blocking method, it is characterised in that：It is described
Fine sand leak stopping slurry is made up of Macromolecule glue elasticity sealing agent GD-3, blanc fixe, bridging plug agent, fine sand and water；
Wherein, Macromolecule glue elasticity sealing agent GD-3 accounts for the 1% of water weight, and blanc fixe accounts for the 15% of water weight, and bridging plug agent is accounted for
The 10 ~ 15% of water weight, fine sand accounts for the 30% of water weight.
3. a kind of fine sand leak stopping according to claim 1 is starched, annular space is counter to note backward extrusion blocking method, it is characterised in that：Step
3）Described in movable polish drill rod include lifting polish drill rod up and down and horizontally rotate polish drill rod, the speed that polish drill rod is lifted up and down is 8-
15m/min, horizontally rotates polish drill rod, rotating speed is 60-90r/min by rotating drilling well brill disk.
4. a kind of fine sand leak stopping according to claim 2 is starched, annular space is counter to note backward extrusion blocking method, it is characterised in that：It is described
Bridging plug agent is the mixing composite being made up of in any proportion cotton seed hulls, acute end, Pericarppium Armeniacae Amarum, mica sheet, particle size range 20-5
Mesh.
5. a kind of fine sand leak stopping according to claim 2 is starched, annular space is counter to note backward extrusion blocking method, it is characterised in that：It is described
Blanc fixe particle size range 20-200 mesh.
6. a kind of fine sand leak stopping according to claim 2 is starched, annular space is counter to note backward extrusion blocking method, it is characterised in that：It is described
Fine sand is hard yellow ground for building, 2-3 millimeters of granularity.
7. a kind of fine sand leak stopping according to claim 2 is starched, annular space is counter to note backward extrusion blocking method, it is characterised in that described
Fine sand leak stopping slurry preparation process be：Three point two of the total amount that discharged water in slurry commanding tank, starts the agitator on slurry commanding tank, remaining three points
One of water by pump by waterpower mixing hopper in slurry commanding tank interior circulation, and sequentially add the Macromolecule glue elasticity leak stopping of formula ratio
Agent GD-3, blanc fixe, bridging plug agent, fine sand, after stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710333423.9A CN107035338B (en) | 2017-05-12 | 2017-05-12 | Annular space is counter infuses backward extrusion blocking method for a kind of fine sand leak stopping slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710333423.9A CN107035338B (en) | 2017-05-12 | 2017-05-12 | Annular space is counter infuses backward extrusion blocking method for a kind of fine sand leak stopping slurry |
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| Publication Number | Publication Date |
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| CN107035338A true CN107035338A (en) | 2017-08-11 |
| CN107035338B CN107035338B (en) | 2018-12-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113574135A (en) * | 2019-03-13 | 2021-10-29 | 欧洲穆德股份有限公司 | Composition for making drilling fluid non-invasive |
| CN115405254A (en) * | 2022-08-09 | 2022-11-29 | 中石化石油工程技术服务有限公司 | Foam cement leakage stopping method |
| US11912928B2 (en) | 2019-03-13 | 2024-02-27 | European Mud Company As | Composition for making a drilling fluid a non-invasive drilling fluid |
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| CN103306637A (en) * | 2013-06-27 | 2013-09-18 | 中国石油集团川庆钻探工程有限公司 | Method for realizing plugging by granulated stone filling and follow-up cementing on packer |
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| CN106555565A (en) * | 2016-11-30 | 2017-04-05 | 中石化石油工程技术服务有限公司 | A kind of low pressure and easy leaking loses the cementing method that well positive injection is instead squeezed |
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2017
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2667351B1 (en) * | 1990-09-27 | 1996-02-23 | Total Petroles | DEVICE FOR PUSHING CASING IN A WELLBORE. |
| US20040244978A1 (en) * | 2003-06-04 | 2004-12-09 | Sun Drilling Products Corporation | Lost circulation material blend offering high fluid loss with minimum solids |
| CN102877812A (en) * | 2012-09-14 | 2013-01-16 | 中国石油大学(华东) | Method of balancing pressure for well cementation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113574135A (en) * | 2019-03-13 | 2021-10-29 | 欧洲穆德股份有限公司 | Composition for making drilling fluid non-invasive |
| US11912928B2 (en) | 2019-03-13 | 2024-02-27 | European Mud Company As | Composition for making a drilling fluid a non-invasive drilling fluid |
| CN115405254A (en) * | 2022-08-09 | 2022-11-29 | 中石化石油工程技术服务有限公司 | Foam cement leakage stopping method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107035338B (en) | 2018-12-28 |
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Effective date of registration: 20211018 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. Address before: Room 1902, Changqing building, 151 Weiyang Road, Xi'an, Shaanxi 710018 Patentee before: CNPC CHUANQING DRILLING ENGINEERING CO., LTD. CHANGQING WELL DRILLING GENERAL Co. |
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