CN109294537A - A kind of leak stopping slurry and blocking method - Google Patents
A kind of leak stopping slurry and blocking method Download PDFInfo
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- CN109294537A CN109294537A CN201811375776.6A CN201811375776A CN109294537A CN 109294537 A CN109294537 A CN 109294537A CN 201811375776 A CN201811375776 A CN 201811375776A CN 109294537 A CN109294537 A CN 109294537A
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- 239000002002 slurry Substances 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000903 blocking effect Effects 0.000 title claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 430
- 238000005553 drilling Methods 0.000 claims abstract description 209
- 238000007789 sealing Methods 0.000 claims abstract description 199
- 239000012530 fluid Substances 0.000 claims abstract description 171
- 239000000654 additive Substances 0.000 claims abstract description 135
- 230000000996 additive effect Effects 0.000 claims abstract description 135
- 229920002472 Starch Polymers 0.000 claims abstract description 13
- 235000019698 starch Nutrition 0.000 claims abstract description 13
- 150000001875 compounds Chemical class 0.000 claims description 219
- 229920000742 Cotton Polymers 0.000 claims description 33
- 230000008595 infiltration Effects 0.000 claims description 32
- 238000001764 infiltration Methods 0.000 claims description 32
- 239000000047 product Substances 0.000 claims description 30
- 239000010445 mica Substances 0.000 claims description 21
- 229910052618 mica group Inorganic materials 0.000 claims description 21
- 239000000706 filtrate Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 7
- 238000006277 sulfonation reaction Methods 0.000 claims description 3
- 239000002981 blocking agent Substances 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000005056 compaction Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 239000013065 commercial product Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 238000004078 waterproofing Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 101000832669 Rattus norvegicus Probable alcohol sulfotransferase Proteins 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
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- 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
-
- 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
- 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
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of leak stopping slurry and blocking methods, including well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A is 10~50%, wherein the weight percentage of drilling fluid closure type fluid loss additive G327 is 10~50%, and well starches surplus.The present invention provides a kind of blocking methods suitable for gas field, it is excellent that sealing characteristics is starched in leak stopping, at the scene in work progress, can effectively solve upper formation compaction it is low when circulation problems, the technical problem for alleviating Lower Paleozoic strata solution cavity severe mud losses, meets leak stopping demand during the exploration well exploration and development of gas field.
Description
Technical field
The invention belongs to gas field leakage stopping technology field more particularly to a kind of leak stopping slurries and blocking method.
Background technique
Due to the needs persistently increased oil gas, the exploration to outlying exploratory area is continued to increase in recent years, due to outlying spy
Area stratum and complex situations understanding are insufficient, and the specific aim of existing drilling liquid technology is not strong, when especially taking place frequently problem in face of leakage
None suitable leakage stopping technology scheme causes outlying prospect pit to be drilled well speed whole slower, according to 56 mouthfuls of finishing drilling in 2017
Gas exploration well data statistics, average well depth 2573m, average drilling period 48.85d, wherein individual drilling periods are more than 100d.Cause
This, needs to carry out the relevant research of leakage stopping technology, provides technical support for block scale development, to realize that outlying prospect pit exploration is opened
The whole speed-raising of hair.
Currently, the notch of natural gas is larger with the progress of national " coal changes gas ", carry out Ordos Basin Austria pottery successively
The deep natural gas resource probing of the Cambrian system of system and its underpart, Changchengian System stratum, previous exploratory well is in Ordos Basin ground vapour
The well most deep drilling that exploratory area is completed is put on the Paleozoic group (at the top of the Ordovician system), and then needs to drill the Ordovician system, Cambrian system, Changchengian System at present
Finishing drilling, the geology and well data that can be referred to are few, such as strata pressure (hole, collapsing, rupture), temperature, formation fluid property
It is horizontal Deng, construction team and status of equipment is also irregular, therefore the probability and degree that occur challenge when drilling well are substantially
It increases, the risk of drilling well increases, and the difficulty of processing complexity and risk increases.
(1) understanding deficiency is layered to geological condition.Changqing Gas Fields east outlying prospect pit upper formation compaction is low, extends
There are multiple leak sources, long open hole sections to leak, collapse, spray same layer for group, Liu Jiagou-Benxi group；Understratum fracture development, Lower Paleozoic strata horse
Family's ditch group has the development of hole solution cavity, and long open hole well section stratum has more set pressure systems, and leakage and well control wind easily occurs
Danger；There are crack, microcracks to develop for three mountain group of Lower Paleozoic strata Cambrian system, summer group, and it is corresponding due to not carrying out to have bored multiple wells
Drilling fluid leaking-stopping measure, this layer of position, leakage is serious and be forced finishing drilling in advance.
(2) without reasonable leakage stopping technology measure.Construction team is horizontal and status of equipment is irregular, when in drilling process
When there is leakage situation, most operation is exactly the existing sealing agent of use site, determining leak-off velocity, loss horizon and
Type is missed, selection, testing instrument and the waterproofing of plugging material type do not have regulation that can go to execute, and cause leak stopping success
Rate is not high, wastes a large amount of man power and material, and only Liu family's ditch group blocking construction is just 30 days time-consuming, can only be shifted to an earlier date by robbing brill means
Lower protective casing completes this section construction.
(3) cement slurry leak stopping has pollution drilling fluid risk.Such well can often encounter large fracture, solution cavity in Cambrian system construction
Etc. severe leakages the case where, generally use Cementing, intensity is too big after cement solidifies completely in order to prevent, can only be in cement
Drilling out is begun to when partially solidified, a large amount of cement slurry certainly will be caused to be mixed into drilling fluid in this way, pollutes drilling fluid
Performance, even result in drilling fluid break glue, flocculation, lose stability.
In summary illustrate, in outlying exploration well drilling process, rationally effective leaking-stopping measure is that outlying exploration well is opened
Send out the most important thing of speed-raising.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of leak stopping slurry and blocking method are provided, overcome
In the prior art 1: none suitable leakage stopping technology scheme causes outlying prospect pit to be drilled well speed whole slower；2: adopting
There is pollution drilling fluid risk with cement slurry leak stopping；3: the problems such as specific aim of existing drilling liquid technology is not strong.
In order to solve technical problem, the technical scheme is that a kind of leak stopping is starched, including well slurry, uniaxial pressure are blocked
Agent DF-A and drilling fluid closure type fluid loss additive G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A be 10~
50%, wherein the weight percentage of drilling fluid closure type fluid loss additive G327 is 10~50%, and well starches surplus.
Preferably, further include compound leakage stop agent HD-1, compound leakage stop agent HD-2 and without infiltration pressure-bearing sealing agent WSD in one
Kind is a variety of, and wherein the weight percentage of compound leakage stop agent HD-1 is 15~55%, wherein the weight hundred of compound leakage stop agent HD-2
Dividing content is 20~50%, wherein the weight percentage without infiltration pressure-bearing sealing agent WSD is 5~20%.
Preferably, including following several formulas:
Formula is 1) when wastage is 1.0~5.0m3When/h, using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid closure type
The leak stopping that fluid loss additive G327 is configured to is starched, wherein uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327
Weight percent be 15 ~ 30:15 ~ 30, or using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid with closure type drop filter
Lose agent G327, the leak stopping slurry that compound leakage stop agent HD-2 is configured to, wherein uniaxial pressure sealing agent DF-A, drilling fluid are dropped with closure type
Fluid loss agents G327, compound leakage stop agent HD-2 weight percent be 20 ~ 40:20 ~ 40:20 ~ 30；
Formula is 2) when wastage is 5.0~10.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 20
~ 40:15 ~ 30:15 ~ 30:20 ~ 40；
Formula is 3) when wastage is 10.0~15.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 15
~ 30:15 ~ 30:70 ~ 85:20 ~ 40；
Formula is 4) when wastage is 15.0~20.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
Type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, the leak stopping being configured to without infiltration pressure-bearing sealing agent WSD
It starches, wherein uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leak stopping
Agent HD-2, the weight percent without infiltration pressure-bearing sealing agent WSD are 20 ~ 40:20 ~ 40:70 ~ 85:20 ~ 40:20 ~ 40.
Preferably, the formula 2) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2 weight percent be 30:20:20:30, wherein well slurry product be 5m3, leak stopping slurry
Concentration is 150Kg/m3。
Preferably, the formula 3) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2 weight percent be 20:20:80:30, wherein well slurry product be 10 ~ 15m3, leak stopping
The concentration of slurry is 200Kg/m3。
Preferably, the formula 4) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2, the weight percent without infiltration pressure-bearing sealing agent WSD are 30:30:80:30:30,
Middle well slurry product is 10 ~ 20m3, the concentration of leak stopping slurry is 300Kg/m3。
Preferably, the uniaxial pressure sealing agent DF-A is the sawdust after sulfonation, drilling fluid closure type filtrate reducing
Agent G327 is mica sheet and shell mixture, and wherein the weight ratio of mica sheet and shell is 1:1, and the compound leakage stop agent HD-1 is
Shell and cotton seed hulls mixture, wherein the weight ratio of shell and cotton seed hulls is 1:1, and the compound leakage stop agent HD-2 is shell and cotton
Seed shell mixture, wherein the weight ratio of shell and cotton seed hulls is 1:2.
Preferably, a kind of blocking method of leak stopping slurry as described above, when using formula 1): uniaxial pressure first is added with brill
Sealing agent DF-A and drilling fluid closure type fluid loss additive G327, wherein uniaxial pressure sealing agent DF-A and drilling fluid closure type
The weight ratio of fluid loss additive G327 is 1:1, time 30min, is repeated 2~3 times, and plugging while drilling effect is observed；If still leaked
It loses, dose volume 5m3, concentration 40Kg/m3Leak stopping is starched to drop ply, wherein formula be well slurry, uniaxial pressure sealing agent DF-A and
Drilling fluid closure type fluid loss additive G327, wherein well slurry is 5m3, uniaxial pressure sealing agent DF-A and drilling fluid are dropped with closure type
The weight percent of fluid loss agents G327 is 20:20；If wastage continues to increase, dose volume 5m3, concentration 80Kg/m3Leak stopping
Slurry, wherein formula is well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327, compound leakage stop agent
HD-2, wherein well slurry is 5m3, uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent
The weight percent of HD-2 is 30:30:20.
Compared with the existing technology, the present invention has the advantages that
(1) the present invention provides a kind of blocking methods suitable for gas field, and leak stopping slurry sealing characteristics is excellent, at the scene work progress
In, can effectively solve upper formation compaction it is low when circulation problems, the technology for alleviating Lower Paleozoic strata solution cavity severe mud losses is difficult
Topic, meets leak stopping demand during the exploration well exploration and development of gas field；
(2) testing instrument of the present invention is simple and easy, and leak stopping agent material used belongs to commercial product, leak stopping agent material kind used
Class is few, and good with well slurry compatibility, will not reunite, not thicken, will not pollute problem to drilling fluid and stratum, save
A large amount of manpower and material resources；
(3) testing instrument of the present invention is with strong points, has segmented the leakage type in drilling process, leak-off velocity and has blocked up accordingly
Spillage formula is coped in time after missing, and avoids more serious underground problem, saves plugging time, leak stopping success rate
It is relatively high；
(4) leak stopping slurry leak stopping onset time of the present invention is long, and leak stopping slurry blocks hole and microcrack by deformable closure polymer, subtracts
Few pore pressure transmitting, avoids the risk of differential sticking, plugging operations will not be repeated in the same layer position.
Specific embodiment
The specific embodiment of the invention is described below with reference to embodiment:
It should be noted that structure, ratio, size etc. that this specification is illustrated, only to cooperate specification revealed
Content is not intended to limit the invention enforceable qualifications, Ren Hejie so that those skilled in the art understands and reads
The modification of structure, the change of proportionate relationship or the adjustment of size are not influencing the effect of present invention can be generated and can reach
Under purpose, should all still it fall in the range of disclosed technology contents can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, also
Only being illustrated convenient for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in nothing
Under essence change technology contents, when being also considered as the enforceable scope of the present invention.
Embodiment 1
The invention discloses a kind of leak stopping slurries, including well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type filtrate reducing
Agent G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A is 10~50%, wherein drilling fluid closure type filtrate reducing
The weight percentage of agent G327 is 10~50%, and well starches surplus.
Embodiment 2
The invention discloses a kind of leak stopping slurries, including well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type filtrate reducing
Agent G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A is 10~50%, wherein drilling fluid closure type filtrate reducing
The weight percentage of agent G327 is 10~50%, and well starches surplus.
Preferably, further include compound leakage stop agent HD-1, compound leakage stop agent HD-2 and without infiltration pressure-bearing sealing agent WSD in one
Kind is a variety of, and wherein the weight percentage of compound leakage stop agent HD-1 is 15~55%, wherein the weight hundred of compound leakage stop agent HD-2
Dividing content is 20~50%, wherein the weight percentage without infiltration pressure-bearing sealing agent WSD is 5~20%.
Embodiment 3
The invention discloses a kind of leak stopping slurries, including well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type filtrate reducing
Agent G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A is 10~50%, wherein drilling fluid closure type filtrate reducing
The weight percentage of agent G327 is 10~50%, and well starches surplus.
Preferably, further include compound leakage stop agent HD-1, compound leakage stop agent HD-2 and without infiltration pressure-bearing sealing agent WSD in one
Kind is a variety of, and wherein the weight percentage of compound leakage stop agent HD-1 is 15~55%, wherein the weight hundred of compound leakage stop agent HD-2
Dividing content is 20~50%, wherein the weight percentage without infiltration pressure-bearing sealing agent WSD is 5~20%.
Preferably, including following several formulas:
Formula is 1) when wastage is 1.0~5.0m3When/h, using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid closure type
The leak stopping that fluid loss additive G327 is configured to is starched, wherein uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327
Weight percent be 15 ~ 30:15 ~ 30, or using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid with closure type drop filter
Lose agent G327, the leak stopping slurry that compound leakage stop agent HD-2 is configured to, wherein uniaxial pressure sealing agent DF-A, drilling fluid are dropped with closure type
Fluid loss agents G327, compound leakage stop agent HD-2 weight percent be 20 ~ 40:20 ~ 40:20 ~ 30；
Formula is 2) when wastage is 5.0~10.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 20
~ 40:15 ~ 30:15 ~ 30:20 ~ 40；
Formula is 3) when wastage is 10.0~15.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 15
~ 30:15 ~ 30:70 ~ 85:20 ~ 40；
Formula is 4) when wastage is 15.0~20.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
Type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, the leak stopping being configured to without infiltration pressure-bearing sealing agent WSD
It starches, wherein uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leak stopping
Agent HD-2, the weight percent without infiltration pressure-bearing sealing agent WSD are 20 ~ 40:20 ~ 40:70 ~ 85:20 ~ 40:20 ~ 40.
Embodiment 4
The invention discloses a kind of leak stopping slurries, including well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type filtrate reducing
Agent G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A is 10~50%, wherein drilling fluid closure type filtrate reducing
The weight percentage of agent G327 is 10~50%, and well starches surplus.
Preferably, further include compound leakage stop agent HD-1, compound leakage stop agent HD-2 and without infiltration pressure-bearing sealing agent WSD in one
Kind is a variety of, and wherein the weight percentage of compound leakage stop agent HD-1 is 15~55%, wherein the weight hundred of compound leakage stop agent HD-2
Dividing content is 20~50%, wherein the weight percentage without infiltration pressure-bearing sealing agent WSD is 5~20%.
Preferably, including following several formulas:
Formula is 1) when wastage is 1.0~5.0m3When/h, using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid closure type
The leak stopping that fluid loss additive G327 is configured to is starched, wherein uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327
Weight percent be 15 ~ 30:15 ~ 30, or using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid with closure type drop filter
Lose agent G327, the leak stopping slurry that compound leakage stop agent HD-2 is configured to, wherein uniaxial pressure sealing agent DF-A, drilling fluid are dropped with closure type
Fluid loss agents G327, compound leakage stop agent HD-2 weight percent be 20 ~ 40:20 ~ 40:20 ~ 30；
Formula is 2) when wastage is 5.0~10.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 20
~ 40:15 ~ 30:15 ~ 30:20 ~ 40；
Formula is 3) when wastage is 10.0~15.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 15
~ 30:15 ~ 30:70 ~ 85:20 ~ 40；
Formula is 4) when wastage is 15.0~20.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
Type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, the leak stopping being configured to without infiltration pressure-bearing sealing agent WSD
It starches, wherein uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leak stopping
Agent HD-2, the weight percent without infiltration pressure-bearing sealing agent WSD are 20 ~ 40:20 ~ 40:70 ~ 85:20 ~ 40:20 ~ 40.
Preferably, the formula 2) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2 weight percent be 30:20:20:30, wherein well slurry product be 5m3, leak stopping slurry
Concentration is 150Kg/m3。
Preferably, the formula 3) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2 weight percent be 20:20:80:30, wherein well slurry product be 10 ~ 15m3, leak stopping
The concentration of slurry is 200Kg/m3。
Embodiment 5
The invention discloses a kind of leak stopping slurries, including well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type filtrate reducing
Agent G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A is 10~50%, wherein drilling fluid closure type filtrate reducing
The weight percentage of agent G327 is 10~50%, and well starches surplus.
Preferably, further include compound leakage stop agent HD-1, compound leakage stop agent HD-2 and without infiltration pressure-bearing sealing agent WSD in one
Kind is a variety of, and wherein the weight percentage of compound leakage stop agent HD-1 is 15~55%, wherein the weight hundred of compound leakage stop agent HD-2
Dividing content is 20~50%, wherein the weight percentage without infiltration pressure-bearing sealing agent WSD is 5~20%.
Preferably, including following several formulas:
Formula is 1) when wastage is 1.0~5.0m3When/h, using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid closure type
The leak stopping that fluid loss additive G327 is configured to is starched, wherein uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327
Weight percent be 15 ~ 30:15 ~ 30, or using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid with closure type drop filter
Lose agent G327, the leak stopping slurry that compound leakage stop agent HD-2 is configured to, wherein uniaxial pressure sealing agent DF-A, drilling fluid are dropped with closure type
Fluid loss agents G327, compound leakage stop agent HD-2 weight percent be 20 ~ 40:20 ~ 40:20 ~ 30；
Formula is 2) when wastage is 5.0~10.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 20
~ 40:15 ~ 30:15 ~ 30:20 ~ 40；
Formula is 3) when wastage is 10.0~15.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 15
~ 30:15 ~ 30:70 ~ 85:20 ~ 40；
Formula is 4) when wastage is 15.0~20.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
Type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, the leak stopping being configured to without infiltration pressure-bearing sealing agent WSD
It starches, wherein uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leak stopping
Agent HD-2, the weight percent without infiltration pressure-bearing sealing agent WSD are 20 ~ 40:20 ~ 40:70 ~ 85:20 ~ 40:20 ~ 40.
Preferably, the formula 2) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2 weight percent be 30:20:20:30, wherein well slurry product be 5m3, leak stopping slurry
Concentration is 150Kg/m3。
Preferably, the formula 3) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2 weight percent be 20:20:80:30, wherein well slurry product be 10 ~ 15m3, leak stopping
The concentration of slurry is 200Kg/m3。
Preferably, the formula 4) in uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound
Sealing agent HD-1, compound leakage stop agent HD-2, the weight percent without infiltration pressure-bearing sealing agent WSD are 30:30:80:30:30,
Middle well slurry product is 10 ~ 20m3, the concentration of leak stopping slurry is 300Kg/m3。
Preferably, the uniaxial pressure sealing agent DF-A is the sawdust after sulfonation, drilling fluid closure type filtrate reducing
Agent G327 is mica sheet and shell mixture, and wherein the weight ratio of mica sheet and shell is 1:1, and the compound leakage stop agent HD-1 is
Shell and cotton seed hulls mixture, wherein the weight ratio of shell and cotton seed hulls is 1:1, and the compound leakage stop agent HD-2 is shell and cotton
Seed shell mixture, wherein the weight ratio of shell and cotton seed hulls is 1:2.
Preferably, a kind of blocking method of leak stopping slurry as described above, when using formula 1): uniaxial pressure first is added with brill
Sealing agent DF-A and drilling fluid closure type fluid loss additive G327, wherein uniaxial pressure sealing agent DF-A and drilling fluid closure type
The weight ratio of fluid loss additive G327 is 1:1, time 30min, is repeated 2~3 times, and plugging while drilling effect is observed；If still leaked
It loses, dose volume 5m3, concentration 40Kg/m3Leak stopping is starched to drop ply, wherein formula be well slurry, uniaxial pressure sealing agent DF-A and
Drilling fluid closure type fluid loss additive G327, wherein well slurry is 5m3, uniaxial pressure sealing agent DF-A and drilling fluid are dropped with closure type
The weight percent of fluid loss agents G327 is 20:20；If wastage continues to increase, dose volume 5m3, concentration 80Kg/m3Leak stopping
Slurry, wherein formula is well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327, compound leakage stop agent
HD-2, wherein well slurry is 5m3, uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent
The weight percent of HD-2 is 30:30:20.
As wastage ﹥ 20m3/ h is severe mud losses, using other waterproofings, such as low-density cement mortar working solution etc..
Application Example
Uniaxial pressure sealing agent DF-A of the present invention belongs to commercial product, and manufacturer is the big Taurus petroleum science and technology of Southwest Sichuan stone
Co., Ltd；Drilling fluid closure type fluid loss additive G327 belongs to commercial product, and manufacturer is the positive petroleum technology in Xi'an day
Co., Ltd；The compound leakage stop agent HD-1 belongs to commercial product, and manufacturer is China Petroleum Chuan Qing drilling project Co., Ltd
Engineering and technological research institute；The compound leakage stop agent HD-2 belongs to commercial product, and manufacturer is that China Petroleum river celebrating drilling project has
Limit company project Institute for Research and Technology；Described to belong to commercial product without infiltration pressure-bearing sealing agent WSD, manufacturer is that Chengdu is attained the Way industry
Co., Ltd.
Ratio of the present invention is weight ratio or weight percent, and wherein the weight of well slurry is relative to each leak stopping agent material
Weight it is negligible.
Application Example 1: when leakage speed is less than 5.0m3When/h, uniaxial pressure sealing agent DF-A and drilling fluid first is added with brill
With closure type fluid loss additive each 100Kg of G327, sealing agent adds up dosage in 0.1%, time 30min, repeats 2~3 times, observation
Plugging while drilling effect is 5m with volume if still missed3, concentration 40Kg/m3Leak stopping is starched to drop ply, formula are as follows: well slurry+mono-
To pressure sealing agent DF-A+ drilling fluid closure type fluid loss additive G327, wherein drilling fluid is in closure type fluid loss additive G327
Mica sheet and the weight ratio of shell be 1:1, well slurry product is 5m3, uniaxial pressure sealing agent DF-A and drilling fluid seal
The weight percent of stifled type fluid loss additive G327 is that 20:20, i.e. uniaxial pressure sealing agent DF-A and drilling fluid are filtered with closure type drop
The weight for losing agent G327 is 100Kg.
Application Example 2: when leakage speed is less than 5.0m3When/h, uniaxial pressure sealing agent DF-A and drilling fluid first is added with brill
With closure type fluid loss additive each 100Kg of G327, sealing agent adds up dosage in 0.1%, time 30min, repeats 2~3 times, observation
Plugging while drilling effect is 5m with volume if still missed3, concentration 40Kg/m3Leak stopping is starched to drop ply, formula are as follows: well slurry+mono-
To pressure sealing agent DF-A+ drilling fluid closure type fluid loss additive G327, wherein drilling fluid is in closure type fluid loss additive G327
Mica sheet and the weight ratio of shell be 1:1, well slurry product is 5m3, uniaxial pressure sealing agent DF-A and drilling fluid seal
The weight percent of stifled type fluid loss additive G327 is 15:30, i.e., uniaxial pressure sealing agent DF-A weight is 66Kg, drilling fluid envelope
Stifled type fluid loss additive G327 weight is 134Kg.
Application Example 3: when leakage speed is less than 5.0m3When/h, uniaxial pressure sealing agent DF-A and drilling fluid first is added with brill
With closure type fluid loss additive each 100Kg of G327, sealing agent adds up dosage in 0.1%, time 30min, repeats 2~3 times, observation
Plugging while drilling effect is 5m with volume if still missed3, concentration 40Kg/m3Leak stopping is starched to drop ply, formula are as follows: well slurry+mono-
To pressure sealing agent DF-A+ drilling fluid closure type fluid loss additive G327, wherein drilling fluid is in closure type fluid loss additive G327
Mica sheet and the weight ratio of shell be 1:1, well slurry product is 5m3, uniaxial pressure sealing agent DF-A and drilling fluid seal
The weight percent of stifled type fluid loss additive G327 is 30:15, i.e., uniaxial pressure sealing agent DF-A weight is 134Kg, and drilling fluid is used
Closure type fluid loss additive G327 weight is 66Kg.
Application Example 4: when leakage speed is less than 5.0m3When/h, as wastage continues to increase plugging while drilling, it is with volume
5m3, concentration 80Kg/m3Leak stopping slurry, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid closure type fluid loss additive
G327+ compound leakage stop agent HD-2, wherein drilling fluid be with the weight ratio of mica sheet and shell in closure type fluid loss additive G327
1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, and the well slurry product is 5m3, the list
It is 30 to the weight percent of pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-2:
The weight of 30:20, uniaxial pressure sealing agent DF-A are 150Kg, and drilling fluid is with the weight of closure type fluid loss additive G327
The weight of 150Kg, compound leakage stop agent HD-2 are 100Kg, need whether particle in confirmation compound leakage stop agent HD-2 can pass through before use
Drilling tool.
Application Example 5: when leakage speed is less than 5.0m3When/h, as wastage continues to increase plugging while drilling, it is with volume
5m3, concentration 80Kg/m3Leak stopping slurry, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid closure type fluid loss additive
G327+ compound leakage stop agent HD-2, wherein drilling fluid be with the weight ratio of mica sheet and shell in closure type fluid loss additive G327
1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, and the well slurry product is 5m3, the list
It is 20 to the weight percent of pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-2:
The weight of 40:30, uniaxial pressure sealing agent DF-A are 88Kg, and drilling fluid is 176Kg with the weight of closure type fluid loss additive G327,
The weight of compound leakage stop agent HD-2 is 136Kg, needs whether particle in confirmation compound leakage stop agent HD-2 can pass through drilling tool before use.
Application Example 6: when leakage speed is less than 5.0m3When/h, as wastage continues to increase plugging while drilling, it is with volume
5m3, concentration 80Kg/m3Leak stopping slurry, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid closure type fluid loss additive
G327+ compound leakage stop agent HD-2, wherein drilling fluid be with the weight ratio of mica sheet and shell in closure type fluid loss additive G327
1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, and the well slurry product is 5m3, the list
It is 40 to the weight percent of pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-2:
The weight of 20:30, uniaxial pressure sealing agent DF-A are 176Kg, and drilling fluid is 88Kg with the weight of closure type fluid loss additive G327,
The weight of compound leakage stop agent HD-2 is 136Kg, needs whether particle in confirmation compound leakage stop agent HD-2 can pass through drilling tool before use.
Application Example 7: when leakage speed is greater than 5.0m3When/h, more serious leakage (5.0~10.0m3/ h), plugging while drilling side
Case dose volume is 5m3, concentration 150Kg/m3Leak stopping slurry, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid envelope
Type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2 is blocked up, wherein drilling fluid closure type fluid loss additive G327
In mica sheet and shell weight ratio be 1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-1 and cotton seed hulls be 1:
1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, the uniaxial pressure sealing agent DF-A, drilling well
Liquid is 30:20:20 with the weight percent of closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2:
30, wherein well slurry product is 5m3, the weight of uniaxial pressure sealing agent DF-A is 225Kg, drilling fluid closure type fluid loss additive
The weight of G327 is 150Kg, and the weight of compound leakage stop agent HD-1 is 150Kg, and the weight of compound leakage stop agent HD-2 is 225Kg, is made
Need to confirm whether particle can pass through drilling tool in compound leakage stop agent HD-2 before.
Application Example 8: when leakage speed is greater than 5.0m3When/h, more serious leakage (5.0~10.0m3/ h), plugging while drilling side
Case dose volume is 5m3, concentration 150Kg/m3Leak stopping slurry, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid envelope
Type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2 is blocked up, wherein drilling fluid closure type fluid loss additive G327
In mica sheet and shell weight ratio be 1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-1 and cotton seed hulls be 1:
1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, and uniaxial pressure sealing agent DF-A, drilling fluid are used
Closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 20:30:30:20,
Middle well slurry product is 5m3, the weight of uniaxial pressure sealing agent DF-A is 150Kg, and drilling fluid is with closure type fluid loss additive G327's
Weight is 225Kg, and the weight of compound leakage stop agent HD-1 is 225Kg, and the weight of compound leakage stop agent HD-2 is 150Kg, is needed before use
Whether particle can pass through drilling tool in confirmation compound leakage stop agent HD-2.
Application Example 9: when leakage speed is greater than 5.0m3When/h, more serious leakage (5.0~10.0m3/ h), plugging while drilling side
Case dose volume is 5m3, concentration 150Kg/m3Leak stopping slurry, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid envelope
Type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2 is blocked up, wherein drilling fluid closure type fluid loss additive G327
In mica sheet and shell weight ratio be 1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-1 and cotton seed hulls be 1:
1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, and uniaxial pressure sealing agent DF-A, drilling fluid are used
Closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 40:15:15:40,
Middle well slurry product is 5m3, the weight of uniaxial pressure sealing agent DF-A is 273Kg, and drilling fluid is with closure type fluid loss additive G327's
Weight is 102Kg, and the weight of compound leakage stop agent HD-1 is 102Kg, and the weight of compound leakage stop agent HD-2 is 273Kg, is needed before use
Whether particle can pass through drilling tool in confirmation compound leakage stop agent HD-2.
Application Example 10: when leakage speed is greater than 5.0m3When/h, wastage continues to increase (10.0~15.0m3/ h), under trip-out
Polish drill rod pressurization sealing scheme dose volume is 15m3, concentration 200Kg/m3, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A
+ drilling fluid closure type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2, wherein drilling fluid closure type
The weight ratio of mica sheet and shell in fluid loss additive G327 is 1:1, wherein the shell and cotton seed hulls in compound leakage stop agent HD-1
Weight ratio be 1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls be 1:2, uniaxial pressure sealing agent
DF-A, drilling fluid are with the weight percent of closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2
20:20:80:30, wherein well slurry product is 15m3, the weight of uniaxial pressure sealing agent DF-A is 400Kg, drilling fluid closure type
The weight of fluid loss additive G327 is 400Kg, and the weight of compound leakage stop agent HD-1 is 1600Kg, and the weight of compound leakage stop agent HD-2 is
600Kg。
Application Example 11: when leakage speed is greater than 5.0m3When/h, wastage continues to increase (10.0~15.0m3/ h), under trip-out
Polish drill rod pressurization sealing scheme dose volume is 15m3, concentration 200Kg/m3, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A
+ drilling fluid closure type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2, wherein drilling fluid closure type
The weight ratio of mica sheet and shell in fluid loss additive G327 is 1:1, wherein the shell and cotton seed hulls in compound leakage stop agent HD-1
Weight ratio be 1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls be 1:2, uniaxial pressure sealing agent
DF-A, drilling fluid are with the weight percent of closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2
15:30:70:20, wherein well slurry product is 15m3, the weight of uniaxial pressure sealing agent DF-A is 330Kg, drilling fluid closure type
The weight of fluid loss additive G327 is 660Kg, and the weight of compound leakage stop agent HD-1 is 1540Kg, and the weight of compound leakage stop agent HD-2 is
470Kg。
Application Example 12: when leakage speed is greater than 5.0m3When/h, wastage continues to increase (10.0~15.0m3/ h), under trip-out
Polish drill rod pressurization sealing scheme dose volume is 15m3, concentration 200Kg/m3, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A
+ drilling fluid closure type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2, wherein drilling fluid closure type
The weight ratio of mica sheet and shell in fluid loss additive G327 is 1:1, wherein the shell and cotton seed hulls in compound leakage stop agent HD-1
Weight ratio be 1:1, wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls be 1:2, uniaxial pressure sealing agent
DF-A, drilling fluid are with the weight percent of closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2
30:15:85:40, wherein well slurry product is 15m3, the weight of uniaxial pressure sealing agent DF-A is 529Kg, drilling fluid closure type
The weight of fluid loss additive G327 is 264Kg, and the weight of compound leakage stop agent HD-1 is 1500Kg, and the weight of compound leakage stop agent HD-2 is
707Kg。
Application Example 13: when leakage speed is greater than 5.0m3When/h, wastage continues to increase (15.0~20.0m3/ h), continue to hold
Pressure waterproofing dose volume is 20m3, concentration 300Kg/m3, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid
With closure type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2+ without infiltration pressure-bearing sealing agent WSD, wherein boring
Well liquid is 1:1 with the weight ratio of mica sheet and shell in closure type fluid loss additive G327, wherein in compound leakage stop agent HD-1
The weight ratio of shell and cotton seed hulls is 1:1, and wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, single
To pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, nothing
The weight percent for permeating pressure-bearing sealing agent WSD is 30:30:80:30:30, and wherein well slurry product is 20m3, uniaxial pressure closure
The weight of agent DF-A is 900Kg, and drilling fluid is 900Kg with the weight of closure type fluid loss additive G327, compound leakage stop agent HD-1's
Weight is 2400Kg, and the weight of compound leakage stop agent HD-2 is 900Kg, and the weight of no infiltration pressure-bearing sealing agent WSD is 900Kg.
Application Example 14: when leakage speed is greater than 5.0m3When/h, wastage continues to increase (15.0~20.0m3/ h), continue to hold
Pressure waterproofing dose volume is 20m3, concentration 300Kg/m3, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid
With closure type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2+ without infiltration pressure-bearing sealing agent WSD, wherein boring
Well liquid is 1:1 with the weight ratio of mica sheet and shell in closure type fluid loss additive G327, wherein in compound leakage stop agent HD-1
The weight ratio of shell and cotton seed hulls is 1:1, and wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, single
To pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, nothing
The weight percent for permeating pressure-bearing sealing agent WSD is 20:40:70:20:40, and wherein well slurry product is 20m3, uniaxial pressure closure
The weight of agent DF-A is 630Kg, and drilling fluid is 1263Kg with the weight of closure type fluid loss additive G327, compound leakage stop agent HD-1's
Weight is 2214Kg, and the weight of compound leakage stop agent HD-2 is 630Kg, and the weight of no infiltration pressure-bearing sealing agent WSD is 1263Kg.
Application Example 15: when leakage speed is greater than 5.0m3When/h, wastage continues to increase (15.0~20.0m3/ h), continue to hold
Pressure waterproofing dose volume is 20m3, concentration 300Kg/m3, formula are as follows: well slurry+uniaxial pressure sealing agent DF-A+ drilling fluid
With closure type fluid loss additive G327+ compound leakage stop agent HD-1+ compound leakage stop agent HD-2+ without infiltration pressure-bearing sealing agent WSD, wherein boring
Well liquid is 1:1 with the weight ratio of mica sheet and shell in closure type fluid loss additive G327, wherein in compound leakage stop agent HD-1
The weight ratio of shell and cotton seed hulls is 1:1, and wherein the weight ratio of the shell in compound leakage stop agent HD-2 and cotton seed hulls is 1:2, single
To pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, nothing
The weight percent for permeating pressure-bearing sealing agent WSD is 40:20:85:40:20, and wherein well slurry product is 20m3, uniaxial pressure closure
The weight of agent DF-A is 1170Kg, and drilling fluid is 585Kg with the weight of closure type fluid loss additive G327, compound leakage stop agent HD-1's
Weight is 2490Kg, and the weight of compound leakage stop agent HD-2 is 1170Kg, and the weight of no infiltration pressure-bearing sealing agent WSD is 585Kg.
Above-mentioned Application Example product is tested for the property:
Test 1: carrying out compatibility evaluation to the testing instrument of Application Example 1~15 and base slurry, base slurry formula such as: 0.3%
+ 1% soil+0.2%PAC-LV+0.3%PAC-HV+0.2%XCD+8%SMP-2+2%SFT+30% chlorination of+0.2% sodium hydroxide of sodium carbonate
Sodium++ 3%G314+2%G308(nanometers of agstone sealing agent)+weighting material, drilling fluid density 1.25g/cm3, 150 DEG C of heat rolling
After × 16h, leak stopping performance of the testing instrument of Application Example 1~15 of the present invention in drilling fluid is shown in Table 1.
The leak stopping performance of 1 Application Example of table, 1~15 leak stopping slurry
As shown in Table 1, leak stopping slurry product of the present invention belongs to inert material, will not react with drilling fluid, only with leak stopping
The increasing of product design is starched, drilling fluid rheology performance is deteriorated, and high temperature and high pressure filter loss gradually reduces, and both less than 15ml is played
Leak stopping effect, meets the requirement of blocking construction.
Test 2: 1~15 testing instrument of Application Example evaluates its sealing characteristics, test bar by casting bed evaluation test
Part: oil base drilling fluid (formula is with test 1) density 1.25g/cm3；Sand size are as follows: 20 mesh~40 mesh；Test pressure:
0.69MPa；Testing time: 10min, evaluation result are shown in Table 2.
Casting bed evaluation test is starched in 2 Application Example of table, 1~15 leak stopping
As can be seen from Table 2, as the increasing of leak stopping slurry concentration, the depth of invasion of leak stopping slurry slowly shoal, drilling well can finally be made
Liquid depth of invasion reduced rate reaches 80% or more, and casting bed evaluation test shows that the testing instrument sealing characteristics is excellent.
Field application: after leak stopping slurry product desk research success of the present invention, in gas prospect pit Yi64Jing, Yi33Jing, Yi35Jing
The two of equal wells spud in into having carried out field application in the process.Suitable 33 well location in the Shaanxi Province Yan'an Yichuan County village Ping Zuo of pot mouth township,
Well type is straight well, and 2420 meters of finishing drilling well depth, spud in well liquid density 1.22g/cm at scene two3, hair when being drilled into 1424m Liu family ditch layer position
Life < 2.5m3/ h is leaked, and after the formula of reuse Application Example 2 after 3 times, leakage stops restoring to creep into, testing instrument table
Reveal good plugging effect.
The present invention provides a kind of blocking method suitable for gas field, leak stopping slurry sealing characteristics is excellent, constructs at the scene
Cheng Zhong, can effectively solve upper formation compaction it is low when circulation problems, alleviate Lower Paleozoic strata solution cavity severe mud losses technology
Problem meets leak stopping demand during the exploration well exploration and development of gas field.
Testing instrument of the present invention is simple and easy, and leak stopping agent material used belongs to commercial product, leak stopping agent material used
Type is few, and good with well slurry compatibility, will not reunite, not thicken, will not pollute problem to drilling fluid and stratum, save
A large amount of manpower and material resources.
Testing instrument of the present invention is with strong points, has segmented leakage type in drilling process, leak-off velocity and corresponding
Testing instrument is coped in time after missing, and avoids more serious underground problem, saves plugging time, leak stopping success
Rate is relatively high.
Leak stopping slurry leak stopping onset time of the present invention is long, and leak stopping slurry blocks hole and microcrack by deformable closure polymer,
Pore pressure transmitting is reduced, the risk of differential sticking is avoided, plugging operations will not be repeated in the same layer position.
The preferred embodiment for the present invention is explained in detail above, but the present invention is not limited to the above embodiments,
Those of ordinary skill in the art within the scope of knowledge, can also make various without departing from the purpose of the present invention
Variation.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (8)
1. a kind of leak stopping slurry, it is characterised in that: including well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type filtrate reducing
Agent G327, wherein the weight percentage of uniaxial pressure sealing agent DF-A is 10~50%, wherein drilling fluid closure type filtrate reducing
The weight percentage of agent G327 is 10~50%, and well starches surplus.
2. a kind of leak stopping slurry according to claim 1, it is characterised in that: further include compound leakage stop agent HD-1, compound leak stopping
Agent HD-2 and without infiltration one of pressure-bearing sealing agent WSD or a variety of, wherein the weight percentage of compound leakage stop agent HD-1 is
15~55%, wherein the weight percentage of compound leakage stop agent HD-2 is 20~50%, wherein the weight without infiltration pressure-bearing sealing agent WSD
Measuring percentage composition is 5~20%.
3. a kind of leak stopping slurry according to claim 2, which is characterized in that including following several formulas:
Formula is 1) when wastage is 1.0~5.0m3When/h, using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid closure type
The leak stopping that fluid loss additive G327 is configured to is starched, wherein uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327
Weight percent be 15 ~ 30:15 ~ 30, or using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid with closure type drop filter
Lose agent G327, the leak stopping slurry that compound leakage stop agent HD-2 is configured to, wherein uniaxial pressure sealing agent DF-A, drilling fluid are dropped with closure type
Fluid loss agents G327, compound leakage stop agent HD-2 weight percent be 20 ~ 40:20 ~ 40:20 ~ 30；
Formula is 2) when wastage is 5.0~10.0m3When/h, using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid closure type
The leak stopping that fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 20
~ 40:15 ~ 30:15 ~ 30:20 ~ 40；
Formula is 3) when wastage is 10.0~15.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
The leak stopping that type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 are configured to is starched, wherein uniaxial pressure sealing agent
DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 15
~ 30:15 ~ 30:70 ~ 85:20 ~ 40；
Formula is 4) when wastage is 15.0~20.0m3When/h, blocked using well slurry, uniaxial pressure sealing agent DF-A, drilling fluid
Type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, the leak stopping being configured to without infiltration pressure-bearing sealing agent WSD
It starches, wherein uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leak stopping
Agent HD-2, the weight percent without infiltration pressure-bearing sealing agent WSD are 20 ~ 40:20 ~ 40:70 ~ 85:20 ~ 40:20 ~ 40.
4. a kind of leak stopping slurry according to claim 3, it is characterised in that: described to be formulated uniaxial pressure sealing agent DF- in 2)
A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 30:
20:20:30, wherein well slurry product is 5m3, the concentration of leak stopping slurry is 150Kg/m3。
5. a kind of leak stopping slurry according to claim 3, it is characterised in that: described to be formulated uniaxial pressure sealing agent DF- in 3)
A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2 weight percent be 20:
20:80:30, wherein well slurry product is 10 ~ 15m3, the concentration of leak stopping slurry is 200Kg/m3。
6. a kind of leak stopping slurry according to claim 3, it is characterised in that: described to be formulated uniaxial pressure sealing agent DF- in 4)
A, drilling fluid closure type fluid loss additive G327, compound leakage stop agent HD-1, compound leakage stop agent HD-2, without infiltration pressure-bearing sealing agent
The weight percent of WSD is 30:30:80:30:30, and wherein well slurry product is 10 ~ 20m3, the concentration of leak stopping slurry is 300Kg/m3。
7. a kind of leak stopping slurry according to claim 3, it is characterised in that: the uniaxial pressure sealing agent DF-A is after sulfonation
Sawdust, the drilling fluid is mica sheet and shell mixture, wherein mica sheet and shell with closure type fluid loss additive G327
Weight ratio is 1:1, the compound leakage stop agent HD-1 be shell and cotton seed hulls mixture, wherein the weight ratio of shell and cotton seed hulls be
1:1, the compound leakage stop agent HD-2 are shell and cotton seed hulls mixture, and wherein the weight ratio of shell and cotton seed hulls is 1:2.
8. a kind of blocking method that leak stopping as claimed in claim 3 is starched, which is characterized in that when using formula 1): first adding with brill
Enter uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327, wherein uniaxial pressure sealing agent DF-A and drilling well
Liquid is 1:1, time 30min with the weight ratio of closure type fluid loss additive G327, is repeated 2~3 times, and plugging while drilling effect is observed；
If still missed, dose volume 5m3, concentration 40Kg/m3Leak stopping is starched to drop ply, wherein formula is well slurry, uniaxial pressure envelope
Blocking agent DF-A and drilling fluid closure type fluid loss additive G327, wherein well slurry is 5m3, uniaxial pressure sealing agent DF-A and drilling fluid
Weight percent with closure type fluid loss additive G327 is 20:20；If wastage continues to increase, dose volume 5m3, concentration is
80Kg/m3Leak stopping slurry, wherein formula be well slurry, uniaxial pressure sealing agent DF-A and drilling fluid closure type fluid loss additive G327,
Compound leakage stop agent HD-2, wherein well slurry is 5m3, uniaxial pressure sealing agent DF-A, drilling fluid closure type fluid loss additive G327, answer
The weight percent for closing sealing agent HD-2 is 30:30:20.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5318953A (en) * | 1990-11-15 | 1994-06-07 | American Colloid Company | Method of improving water-swellable clay properties by re-drying, compositions and articles |
| US20040129460A1 (en) * | 2002-08-01 | 2004-07-08 | Macquoid Malcolm | Method for using coconut coir as a lost circulation material for well drilling |
| CN102443382A (en) * | 2011-11-04 | 2012-05-09 | 中国石油集团川庆钻探工程有限公司 | Plugging agent suitable for large-scale leakage, preparation method and plugging process thereof |
| CN105505349A (en) * | 2016-01-20 | 2016-04-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil base drilling fluid fracture leakage stoppage formula |
| CN107011878A (en) * | 2017-04-18 | 2017-08-04 | 北京格瑞迪斯石油技术有限公司 | A kind of compound leakage stop agent and its preparation technology |
| CN107603574A (en) * | 2017-10-11 | 2018-01-19 | 成都瑞吉星化工有限责任公司 | A kind of drilling water base sealing agent and its application method |
| CN107722954A (en) * | 2017-11-01 | 2018-02-23 | 中石化石油工程技术服务有限公司 | A kind of sealing agent, leak stopping slurries and leak-blocking construction method for borehole wall fractures leakage |
| US10017679B1 (en) * | 2017-11-07 | 2018-07-10 | Southwest Petroleum University | Plugging agent for improving formation bearing capacity and preparation method thereof |
-
2018
- 2018-11-19 CN CN201811375776.6A patent/CN109294537A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5318953A (en) * | 1990-11-15 | 1994-06-07 | American Colloid Company | Method of improving water-swellable clay properties by re-drying, compositions and articles |
| US20040129460A1 (en) * | 2002-08-01 | 2004-07-08 | Macquoid Malcolm | Method for using coconut coir as a lost circulation material for well drilling |
| CN102443382A (en) * | 2011-11-04 | 2012-05-09 | 中国石油集团川庆钻探工程有限公司 | Plugging agent suitable for large-scale leakage, preparation method and plugging process thereof |
| CN105505349A (en) * | 2016-01-20 | 2016-04-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil base drilling fluid fracture leakage stoppage formula |
| CN107011878A (en) * | 2017-04-18 | 2017-08-04 | 北京格瑞迪斯石油技术有限公司 | A kind of compound leakage stop agent and its preparation technology |
| CN107603574A (en) * | 2017-10-11 | 2018-01-19 | 成都瑞吉星化工有限责任公司 | A kind of drilling water base sealing agent and its application method |
| CN107722954A (en) * | 2017-11-01 | 2018-02-23 | 中石化石油工程技术服务有限公司 | A kind of sealing agent, leak stopping slurries and leak-blocking construction method for borehole wall fractures leakage |
| US10017679B1 (en) * | 2017-11-07 | 2018-07-10 | Southwest Petroleum University | Plugging agent for improving formation bearing capacity and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 周成 等: "钻井液用无渗透承压封堵剂 树脂纤维混合物（WSD）", 《成都得道实业有限公司企业标准Q/71304201-6•59-2017》 * |
| 塔里木石油勘探开发指挥部钻井监督办公室: "《钻井监督指南》", 31 July 1999, 石油工业出版社 * |
| 徐同台: "《钻井工程防漏堵漏技术》", 30 June 1997, 石油工业出版社 * |
| 郝明慧: "《煤层气钻井技术与创新实践》", 30 June 2016, 中国石油大学出版社 * |
| 陶士先: "《地质钻探冲洗液技术》", 31 October 2015, 地质出版社 * |
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Effective date of registration: 20201210 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710018 Changqing science and technology building, Fengcheng 4th Road, Weiyang District, Xi'an City, Shaanxi Province Applicant before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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Application publication date: 20190201 |