CN1461788A - Oil gas layer protective agent for petroleum orilling well - Google Patents
Oil gas layer protective agent for petroleum orilling well Download PDFInfo
- Publication number
- CN1461788A CN1461788A CN 02113796 CN02113796A CN1461788A CN 1461788 A CN1461788 A CN 1461788A CN 02113796 CN02113796 CN 02113796 CN 02113796 A CN02113796 A CN 02113796A CN 1461788 A CN1461788 A CN 1461788A
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- well
- petroleum
- oil gas
- orilling
- protective agent
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Abstract
A protecting agent of oil or gas bearing stratum for drilling petroleum well is disclosed. It can be directly added to the well-drilling liquid for mixing with the colloidal particles in well-drilling liquid. The mixture can quickly from a shield ring near the well surface to block the holes and cracks, so preventing the well-drilling liquid from coming in stratum and protecting the oil or gas bearing stratum.
Description
The invention belongs to petroleum drilling reservoir protection material
The purpose one of oil drilling is in order to seek hydrocarbon zone and the correct hydrocarbon-bearing pool resource of estimating, the 2nd, and for development of fields to greatest extent.Because the working fluid of processes such as drill in fluid and perforation formation testing causes damage to hydrocarbon zone to a certain extent, make and found hydrocarbon zone in time not find, to explored hydrocarbon zone, owing to suffer damage, cause production capacity to reduce, make the hydrocarbon-bearing pool reserves that calculate be lower than its true reserves, directly influence the correct decisions of oil-gas field development.
The purpose of this invention is to provide a kind of easy to usely in drilling process, can effectively protect hydrocarbon zone; Anti-row pressure power is low in oil gas well later stage formation testing process, is easy to de-plugging, the novel reservoir protection agent that permeability resume figure is high.According to this target, through tackling key problem for a long time, develop integrate that shield-temporary plugging, oil gas screen protection are protected, the reservoir protection agent of leakproof, leak stopping.It has the shield-temporary plugging effect, can effectively protect hydrocarbon zone, reduces the infringement to layer of oil gas production of solid phase and filtrate to greatest extent, has again with boring leakproof, leak stopping effect for absorbent ground.
The object of the present invention is achieved like this; a kind of component of oil gas layer protective agent for petroleum orilling well and proportioning: rice husk cracking powder is 15-19 part; cotton seed hulls cracking powder accounts for 31-45 part; Calcium hydrogen carbonate accounts for 15-19 part; flexible fiber 15-20 part, both sexes Mierocrystalline cellulose 5-7 part, emulsified bitumen 9-20 part; reaction is 80 minutes in special composite device, can produce " oil gas layer protective agent for petroleum orilling well
Compared with prior art, the present invention has the work characteristics with the county:
One: " oil gas layer protective agent for petroleum orilling well " directly adds in the drilling fluid; under the effect of pressure reduction; the rigid particles of colloidal solid in the drilling fluid and oil gas layer protective agent for petroleum orilling well and different-grain diameter and the colloidal solid in the drilling fluid carry out multistage, effective filling on bed course; form thin and fine and close internal filter cake rapidly at nearly borehole wall band; promptly form a more shallow shield ring, pore throat in the shutoff stratum or microfracture.
Two: can stop solid phase and filtrate in the drilling fluid to invade the stratum effectively, reduce injury to greatest extent, reach the purpose of protection hydrocarbon zone to payzone.
Three: when the later stage formation testing of oil gas well,, form Negative Pressure Difference by reducing fluid column pressure in the pit shaft, under the effect of reservoir pressure, fluid in the stratum is extruded pore throat and microfracture with fast plugging agent and colloidal solid, thereby finishes de-plugging, and keeps the higher permeability resume figure of hydrocarbon zone.
Four: this invention the time fully takes into account environmental issue in research, and all indexes are compliance with environmental protection requirements all, and the vegetable fibre that accounts for maximum ratio is a kind of raw material of nontoxic, harmless, environmentally safe.
Five: low cost of manufacture; What this product main raw material used is agricultural crop straw, and these stalks are worth low, aboundresources.
Below in conjunction with example the present invention is further described, but should not be considered as the present invention has any qualification to following specific examples.The content of component is represented with weight among each embodiment.
Embodiment one: get 12 parts in rice husk cracking powder; 25 parts in cotton seed hulls cracking powder; 40 parts of inorganic salt materials; plain 13 parts of flexible fiber, 5 parts of both sexes Mierocrystalline celluloses, 3 parts of flexible fibers; 2 parts of emulsified bitumens; reaction is 80 minutes in the composite device of special use, and oven dry dress bag can be produced " oil gas layer protective agent for petroleum orilling well.”
Embodiment two:
Get 15 parts in rice husk cracking powder, 22 parts in cotton seed hulls cracking powder, 40 parts of inorganic salt materials, plain 18 parts of flexible fiber, 3 parts of both sexes Mierocrystalline celluloses, 2 parts of emulsified bitumens, reaction is 80 minutes in the composite device of special use, and oven dry dress bag can be produced " oil gas layer protective agent for petroleum orilling well.”
Claims (1)
- One: a kind of oil gas layer protective agent for petroleum orilling well, component that contains and weight proportion are that rice husk cracking powder is 15-19 part, and cotton seed hulls cracking powder accounts for 31-45 part; Calcium hydrogen carbonate accounts for 15-19 part; flexible fiber 15-20 part, both sexes Mierocrystalline cellulose 5-7 part, emulsified bitumen 9-20 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113796 CN1461788A (en) | 2002-05-29 | 2002-05-29 | Oil gas layer protective agent for petroleum orilling well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113796 CN1461788A (en) | 2002-05-29 | 2002-05-29 | Oil gas layer protective agent for petroleum orilling well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1461788A true CN1461788A (en) | 2003-12-17 |
Family
ID=29742225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02113796 Pending CN1461788A (en) | 2002-05-29 | 2002-05-29 | Oil gas layer protective agent for petroleum orilling well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1461788A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305965C (en) * | 2005-08-05 | 2007-03-21 | 倪红霞 | Cation asphalt anti-collapse agent emulsion and its producing method and using method |
| CN101389729B (en) * | 2006-02-23 | 2015-12-09 | 赫尔克里士公司 | For the raw cotton linter of the ethoxylation of well finishing liquid and workover fluid |
| CN106047331A (en) * | 2016-06-27 | 2016-10-26 | 梅庆波 | Method for preparing clean fracturing fluid by synthesizing ampholytic surfactant through linen fibers |
| CN109504357A (en) * | 2018-11-09 | 2019-03-22 | 大港油田集团有限责任公司 | Overlay film powdered rice hulls plugging agent and its preparation and application |
-
2002
- 2002-05-29 CN CN 02113796 patent/CN1461788A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305965C (en) * | 2005-08-05 | 2007-03-21 | 倪红霞 | Cation asphalt anti-collapse agent emulsion and its producing method and using method |
| CN101389729B (en) * | 2006-02-23 | 2015-12-09 | 赫尔克里士公司 | For the raw cotton linter of the ethoxylation of well finishing liquid and workover fluid |
| CN106047331A (en) * | 2016-06-27 | 2016-10-26 | 梅庆波 | Method for preparing clean fracturing fluid by synthesizing ampholytic surfactant through linen fibers |
| CN109504357A (en) * | 2018-11-09 | 2019-03-22 | 大港油田集团有限责任公司 | Overlay film powdered rice hulls plugging agent and its preparation and application |
| CN109504357B (en) * | 2018-11-09 | 2021-03-16 | 大港油田集团有限责任公司 | Coated rice hull powder plugging agent and preparation and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |