CN104479655A - High-pressure-bearing temporary plugging agent - Google Patents
High-pressure-bearing temporary plugging agent Download PDFInfo
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- CN104479655A CN104479655A CN201410758366.5A CN201410758366A CN104479655A CN 104479655 A CN104479655 A CN 104479655A CN 201410758366 A CN201410758366 A CN 201410758366A CN 104479655 A CN104479655 A CN 104479655A
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- temporary plugging
- plugging agent
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
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- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a high-pressure-bearing temporary plugging agent. The high-pressure-bearing temporary plugging agent is characterized by comprising the following components in parts by weight: 100 parts of water, 3-5 parts of bentonite, 0.3-0.5 part of xanthan gum, 70-110 parts of a slag-type gelatinizing agent, 3-6 parts of a filling agent, 3-5 parts of a retarder and 10-200 parts of barite powder. The high-pressure-bearing temporary plugging agent disclosed by the invention has the advantages of simple formula, low cost, short curing time and convenient operation; the risk of blocking of a drill caused by a cementing plug is avoided, the tripping operation required by the cementing plug is decreased, the drilling plug is avoided, the operation time for packing an open hole section by virtue of the conventional tie-backing well-cementation plug is facilitated to be shortened; the construction of the temporary plugging agent is simple, which meets the on-site pumping requirement; and the high-pressure-bearing temporary plugging agent can be widely applied in petroleum and natural gas drilling.
Description
Technical field
The present invention relates to plugging agent, be specifically related to high pressure-bearing temporary plugging agent.
Background technology
The temporary deblocking technology of high pressure-bearing, relates to the plugging operations before the well cementing operation in oil, gas drilled hole or stifled operation temporarily.In oil, gas drilled hole process, part deep-well after drilling liner cementing, the complete zone of interest of subdrilling, and then carry out tie-back casing well cementation.During tie-back cementing there is Open-Hole Section in bottom, and reservoir pressure coefficient is low, easily leakage occurs during cementing well, affects cementing quality, thus add well cementation difficulty.
In order to ensure cementing quality, at tail pipe hydraucone with segment length 100-150m cement plug of betting, to realize the temporary transient shutoff to bore hole.Use the bit drills boiling water bod after tie-back cementing completes again, carry out lower step operation.The Water-injection clay plug process time is long, generally needs 2-3 days; Cost is high, calculates, reach 10-15 ten thousand yuan by 50,000/day of running cost; Note plug, brill fork clip bore and have a big risk.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high pressure-bearing temporary plugging agent.
In order to solve the problem, according to technical scheme of the present invention, high pressure-bearing temporary plugging agent, is characterized in that: the component comprising following weight part:
The beneficial effect of high pressure-bearing temporary plugging agent of the present invention is: high pressure-bearing temporary plugging agent formula of the present invention is simple, and cost is low, and set time can regulate as required, realizes set time controlled, easy to operate; Avoid cementing plug bit freezing risk, reduce making a trip needed for cementing plug, avoid drilling out, be conducive to the activity duration shortening conventional tie-back cementing cementing plug packing Open-Hole Section, temporary plugging agent constructing operation is simple, meets site pumping requirement; Can be widely used in oil, gas drilled hole.
Embodiment
Embodiment 1: take 100 parts of water, 3 parts of wilkinites, 0.3 part of xanthan gum, 3 parts of retardant, 70 parts of slag class jelling agents, 3 parts of weighting agents and 100 parts of ground barium sulfates, add in mud tank, stirs 30min, obtain high pressure-bearing temporary plugging agent.
Testing the high pressure-bearing temporary plugging agent density range obtained is 1.4 ~ 1.9g/cm3, and temperature applicable range is 70 DEG C ~ 130 DEG C.
Embodiment 2: take 100 parts of water, 5 parts of wilkinites, 0.5 part of xanthan gum, 5 parts of retardant, 110 parts of slag class jelling agents, 6 parts of weighting agents and 200 parts of ground barium sulfates, add in mud tank, stirs 40min, obtain high pressure-bearing temporary plugging agent.
Testing the high pressure-bearing temporary plugging agent density range obtained is 1.4 ~ 1.9g/cm3, and temperature applicable range is 70 DEG C ~ 130 DEG C.
Embodiment 3: take 100 parts of water, 5 parts of wilkinites, 0.4 part of xanthan gum, 4 parts of retardant, 100 parts of slag class jelling agents, 5 parts of weighting agents and 150 parts of ground barium sulfates, add in mud tank, stirs 30min, obtain high pressure-bearing temporary plugging agent.
Testing the high pressure-bearing temporary plugging agent density range obtained is 1.4 ~ 1.9g/cm3, and temperature applicable range is 70 DEG C ~ 130 DEG C.
Embodiment 4: by 10000kg water, 500kg wilkinite, 50kg xanthan gum, 300kg retardant, 10000kg slag class jelling agent, 400kg weighting agent and 10000kg ground barium sulfate, add in the first mud tank, stirs 30min, obtain high pressure-bearing temporary plugging agent; In the second mud tank, put into 10000kg water, add 30kg xanthan gum, stir 10min; By drilling tool down to the well section estimating to be formed temporarily stifled slug, first with slush pump the xanthan gum solution in the second mud tank looked straight from drilling tool before well cementation and pump into 1000 ~ 2000kg in well, fill well section about 50 ~ 100 meters; With slush pump the high pressure-bearing temporary plugging agent in the first mud tank looked straight from drilling tool and pump into 4000 ~ 6000kg in well, fill well section about 200 ~ 300 meters; With slush pump the xanthan gum solution in the second mud tank looked straight from drilling tool again and pump into 1000 ~ 2000kg in well, fill well section about 50 ~ 100 meters; Drilling tool is tripped out and estimates to be formed stifled slug top more than 100m temporarily; Wait solidifying 2 ~ 5 days.Solidify the intensity that slug is blocked up in rear test temporarily, reach more than pressure-bearing 60MPa, meet cementing requirements.
Embodiment 5: by 10000kg water, 500kg wilkinite, 30kg xanthan gum, 400kg retardant, 11000kg slag class jelling agent, 300kg multistage particle-filled dose and 20000 ground barium sulfates, add in the first mud tank, stirs 40min, obtain high pressure-bearing temporary plugging agent; In the second mud tank, put into 10000kg water, add 30kg xanthan gum, stir 10min; By drilling tool down to the well section estimating to be formed temporarily stifled slug, first with slush pump the xanthan gum in the second mud tank looked straight from drilling tool before well cementation and pump into 1000 ~ 2000kg in well, fill well section about 50 ~ 100 meters; With slush pump the high pressure-bearing temporary plugging agent in the first mud tank looked straight from drilling tool again and pump into 3000 ~ 6000kg in well, fill well section about 200 ~ 300 meters; With slush pump the xanthan gum in the second mud tank looked straight from drilling tool again and pump into 1000 ~ 2000kg in well, fill well section about 50 ~ 100 meters; Drilling tool is tripped out and estimates to be formed stifled slug top more than 100m temporarily; Wait solidifying 2 ~ 5 days.Solidify the intensity that slug is blocked up in rear test temporarily, reach more than pressure-bearing 60MPa, meet cementing requirements.
In embodiment 1 ~ 5, the quality index of ground barium sulfate is density >=4.2g/cm3; Adopt the ground barium sulfate of West China, An County breeze company limited, the amount of adjustment ground barium sulfate can regulate the density of high pressure-bearing temporary plugging agent; Wilkinite adopts the OCMA wilkinite of Weifang, Shandong Shuan Qiang wilkinite company limited; Xanthan gum adopts XCD (drilling well level) xanthan gum of the biochemical company limited in pavilion in Shandong Zibo; Retardant adopts the SD21 retardant of down-hole Science and Technology Ltd., and the adjustable setting time of adjustment slow setting dosage, retardant is many, and setting time is long, and retardant is few, and setting time is short.Jelling agent adopts the slag class jelling agent of Chuan Qing drilling institute; Weighting agent is talcum powder.
Above the specific embodiment of the present invention is described, but, the scope being not limited only to embodiment of the present invention's protection.
Claims (1)
1. high pressure-bearing temporary plugging agent, is characterized in that: the component comprising following weight part:
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410758366.5A CN104479655A (en) | 2014-12-10 | 2014-12-10 | High-pressure-bearing temporary plugging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410758366.5A CN104479655A (en) | 2014-12-10 | 2014-12-10 | High-pressure-bearing temporary plugging agent |
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| Publication Number | Publication Date |
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| CN104479655A true CN104479655A (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410758366.5A Pending CN104479655A (en) | 2014-12-10 | 2014-12-10 | High-pressure-bearing temporary plugging agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410438A (en) * | 2018-04-16 | 2018-08-17 | 中国石油集团川庆钻探工程有限公司 | One kind can bore brittleness gel partition working solution and preparation method thereof |
| CN110578502A (en) * | 2019-08-14 | 2019-12-17 | 中国石油化工股份有限公司 | Microbial huff-puff oil production method for high-water-content heavy oil reservoir, heavy oil viscosity reduction method for high-water-content heavy oil reservoir and nutrition activator |
-
2014
- 2014-12-10 CN CN201410758366.5A patent/CN104479655A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410438A (en) * | 2018-04-16 | 2018-08-17 | 中国石油集团川庆钻探工程有限公司 | One kind can bore brittleness gel partition working solution and preparation method thereof |
| CN110578502A (en) * | 2019-08-14 | 2019-12-17 | 中国石油化工股份有限公司 | Microbial huff-puff oil production method for high-water-content heavy oil reservoir, heavy oil viscosity reduction method for high-water-content heavy oil reservoir and nutrition activator |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |