CN1218134A - Vulcanized rubber powder blocking agent - Google Patents
Vulcanized rubber powder blocking agent Download PDFInfo
- Publication number
- CN1218134A CN1218134A CN 98118964 CN98118964A CN1218134A CN 1218134 A CN1218134 A CN 1218134A CN 98118964 CN98118964 CN 98118964 CN 98118964 A CN98118964 A CN 98118964A CN 1218134 A CN1218134 A CN 1218134A
- Authority
- CN
- China
- Prior art keywords
- rubber powder
- millimeter
- particle size
- order particle
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
A leakage-stopping agent of sulfurized rubber powder for plugging stratum of oil well, water, or gas well is prepared from sulfurized rubber powder as raw material and sand-carrying liquid prepared with polyacrylamide colloid CMC or beta polymer and water through mixing both together, and features low cost, leakage-stopping durability no poison and pollution, stable performance and safe construction.
Description
The present invention relates to a kind of vulcanized rubber powder, sealing agent that is used for shutoff oil well and well stratum, belong to oil field oil recovery water shutoff technology.
The Water in Water Shutoff in Oil Field technology is an important process technology in water injection well exploitation heterogeneous body oil field, facts have proved, the Water in Water Shutoff in Oil Field technology can reduce the oil-water well aquifer yield effectively, improve oil well output, improve the inhomogeneities of water injection well suction, relate to coefficient longitudinally thereby improve water injection well, increase the recoverable reserves in oil field and improve water injection well development phase recovery percent of reserves, and finally improve the recovery ratio of oil-field flooding well development.
In addition, the oil field entered since the eighties, and each main oilfield composite water cut of the whole nation has risen and reached more than 70%, and control oil field rate of water cut increase reduces the oil well aquifer yield, increases oil production, and the recovery ratio that improves waterflooding extraction has become a urgent vital task.At present, domestic supporting water pack off, oilfield chemistry water blockoff and water injection well are adjusted three cover technologies such as intake profile, its shutoff method commonly used is divided into water filling and drives and annotate the high temperature and high pressure steam huff and puff oil recovery, owing to cause the permeability formation suction air-breathing many toward the interior water filling of oil well, notes vapour for a long time, low permeability formation sucks few, causes the offset well normal open, causes can not vertically evenly driving crude oil when water filling, well yield descends, cost up; Water pack off is used for deep-well more in addition, packer commonly used and the supporting high aquifer of control tool shutoff thereof, increase oil well output, but equipment is huge, the down-hole string complexity, therefore in using certain limitation is arranged, and use less, chemical plugging method and profile control agent are various in style, mix the glue water blockoff as polyacrylamide, chromium glue connection partially hydrolyzed polyacrylamide (PHPA) water blockoff, formaldehyde crosslinking gathers propionyl acid amides water blockoff, third coagulates water blockoff, the silicic acid gel water blockoff, water glass, calcium chloride, phenolic aldehyde, water blockoffs such as Lauxite, it is that rerum natura to the lithology permeability of Different Strata requires high especially that there is shortcoming in said method, and plug agent amount is many, mostly at 100-800m
3/ m, the cost height also causes industrial pollution easily, in addition the engineering time long, stop up a short difficult problem that also becomes in the site operation of stratum time.
Purpose of the present invention is to go to seek the job practices that a kind of vulcanized rubber powder blocking agent is made sealing agent in order to overcome above-mentioned shortcoming, and this sealing agent only need be used 30-50m every mouthful of well shutoff
3Carry that rubber powder content only accounts for 8-15% under the liquid situation, reduced blocking agent in a big way, use this sealing agent can make high permeability formation keep long-term shutoff function in addition, the present invention by retrieval 1985 so far Chinese patent be not reported.
The present invention realizes like this.
The present invention is that to utilize vulcanized rubber powder (waste and used rubber tyre) be raw material, through being machined into the powder with certain particle size; The good characteristic that this powder has vulcanized rubber promptly has certain high resiliency, elongation per unit length, abrasion resistance; Then, a certain proportion of vulcanized rubber powder is allocated in the load fluid of polyacrylamide or CMC as basic blocking agent, be injected in the stratum of oil well or well and go, thereby realize task proposed by the invention.
Vulcanized rubber powder geometry of the present invention is solid microplate sprills, except that having favorable elasticity, prolongation property, changeability, abrasion resistance, also water insoluble, its density is between 0.1-0.2, and selected powder size can be missed the formation pore size according to the down-hole and decided during construction.
Because vulcanized rubber powder is made up of variable particulate, after the leakage-stop liquid carrier was pumped into sealing agent at leakage position, down-hole, the leak stopping layer was just looked for leakage leak stopping naturally, and it is to utilize the particulate of self to stop up the leakage duct;
The also available pressuring method of sealing agent is sent into lost-circulation zone in the well, it is that sealing agent is mixed pumping down-hole, back loss horizon with carrier, increase again and send into pressure, force sealing agent to clamp-on the lost-circulation zone deep, sealing agent can not only be full of lost-circulation zone hole gap, and in hole, press in the formation necessarily, this not only will miss the duct and stop up extremely, and also can not cause again stifled as the appearance fluctuation in the underground work afterwards.
The selected sealing agent physical and mechanical properties of the present invention is as follows:
Density: 0.9-1.3kg/cm
3
Stretch breaking strength: 20-30kg/cm
2
Tensile elongation: 500-800%
Resilience: good
Brittleness temperature: 0 ℃--48 ℃
Coking temperature: 0 ℃-470 ℃
Coking temperature in the water: 0 ℃-800 ℃
Aging coefficient: 70 ℃ * 72 hours
Hardness: Shao Er A 60-90
The particle weight ratio
Sealing agent particle table
| In the every hectogram of I type | In the every hectogram of II type | ||||
| The order number | Granularity mm | Ratio % | The order number | Granularity mm | Ratio % |
| ????40 | ????0.45 | ????47.1 | ????60 | ????0.3 | ????46.4 |
| ????60 | ????0.3 | ????12.5 | ????80 | ????0.2 | ????17.9 |
| ????80 | ????0.2 | ????20.6 | ????100 | ????0.15 | ????13.5 |
| ????100 | ????0.15 | ????9.3 | ????120 | ????0.1 | ????7.2 |
| ????200 | ????0.074 | ????10.5 | ????200 | ????0.074 | ????15 |
Leak stopping mechanism of the present invention:
Use some heavy vulcanized rubber powder blocking agents to be blended into 50m
3The load fluid of polyacrylamide in, after mixing, inject in the stratum by the OIH pipe with pump, stratum itself leans on macromolecular amide groups and formation rock surface by the carboxylic sodium base in the hydrogen bond action generation monolayer absorbing molecules, this material has stronger affinity to water, under viscosity effect, residual resistive and viscoelastic effect effect, the plugged zone hole diminishes, current are obstructed, the particulate rubber that the glue thing is tiny in addition is filled in the formation pore, thereby play selective water plugging, and lose the stratum plugging effect never.
The invention has the advantages that:
Because the present invention uses the blocking agent of vulcanized rubber powder Main Ingredients and Appearance to be equipped with good polyacrylamide again in the stratum of oilfield profile control, leak stopping and carries and become a kind of blocking agent of starting in the liquid, is accepted by oil field down-hole oil production technology gradually.It has overcome traditional sealing agent cost height, and leak stopping is held time short and shortcoming such as site construction technology complexity.This product is not subjected to time restriction when construction, if can not adopt the injection test mode when not understanding the in-place permeability situation, going into pressure to end reaches till the design pressure, just illustrating that blocking agent is apt blocks the stratum macropore, excessive as injection test pressure, cross design pressure, but intensified pressure injects clear water in oil well pushes blocking agent to stratum more depths, the stratum can not have a negative impact yet like this, the present invention can select the particle of different blocking agents according to the stratum pore size respectively for use in construction in addition, changes the not good drawback of plugging effect greatly because of the formation porosity value when having overcome traditional shutoff stratum; Another characteristics of the present invention are: can not be subjected to the interference of formation lithology and formation water salinity, as down-hole columnar sections such as sandstone, carbonate, limestones.Changed and selected different chemical plugging agents for use according to the lithology different needs in the past, and the rubber blocking agent all can be used any stratigraphic section.Therefore, the alternative domestic chemical plugging agent of the present invention is as clay sealing agent, water glass, calcium chloride profile control sealing agent, polyacrylamide sealing agent or the like.
The present invention does further narration in conjunction with the embodiments.
The present invention is provided by following examples:
Embodiment 1:
A kind of vulcanized rubber powder profile control, sealing agent; It is characterized in that utilizing vulcanized rubber powder (or junked tire) to be processed into powder, again this powder joined with carrying in the liquid that CMC, polyacrylamide or β polymer and water are prepared, through mixing its proportioning with certain particle size for raw material blocking agent process:
Water+rubber powder+vulcanizate blocking agent (CMC, polyacrylamide, molecular weight 300-500 ten thousand, degree of hydrolysis 5-20%, β polymer)=1,000 kilograms+80-150 kilogram+10 kilograms.
Embodiment 2:
According to the profile control sealing agent of being prepared of embodiment 1, selected its physical index of rubber powder granularity is:
In every hectogram I type rubber powder sealing agent:
The particle size diameter of (1) 40 order number is 0.45 millimeter, and its ratio accounts for 47.1%
The particle size diameter of (2) 60 order numbers is 0.3 millimeter, and its ratio accounts for 12.5%
The particle size diameter of (3) 80 order numbers is 0.2 millimeter, and its ratio accounts for 20.6%
The particle size diameter of (4) 100 order numbers is 0.15 millimeter, and its ratio accounts for 9.3%
The particle size diameter of (5) 200 order numbers is 0.074 millimeter, and its ratio accounts for 10.5%.
In every hectogram II type rubber powder sealing agent
(6) 40 order particle size diameters are 0.3 millimeter, and its ratio accounts for 46.4%
(7) 80 purpose particle size diameters are 0.2 millimeter, and its ratio accounts for 17.9%
(8) 100 purpose particle size diameters are 0.15 millimeter, and its ratio accounts for 13.5%
(9) 120 purpose particle size diameters are 0.1 millimeter, and its ratio accounts for 7.2%
(10) 200 purpose particle size diameters are 0.074 millimeter, and its ratio accounts for 15%.
Above-mentioned I type sealing agent rubber powder granule diameter is applicable to macroporsity (being that pore radius is greater than 50.1 μ m) stratum leak stopping, and the II type is applicable to fine pore degree stratum leak stopping, should insert rubber powder in above-mentioned ratio when carrying the liquid preparation with vulcanizate.
Embodiment 3:
Profile control sealing agent according to embodiment 2 is prepared, should screen according to following formula when selecting the diameter of rubber powder for use:
Φ=4-9 times of R
Φ-maximum rubber grain diameter
R-stratum average pore diameter
Embodiment 4:
The sealing agent of being prepared according to embodiment 1, it carries liquid and changes in cementing concrete and to add in the well cementation plugging operations that also can be used on behind the 40 purpose rubber powders after the completion, its proportioning is: cementing concrete: vulcanized rubber powder=100: 1～3 can be made into leakproof water blockoff mud by this preparation.
Claims (5)
1, a kind of vulcanized rubber powder profile control sealing agent that is used for shutoff oil well and well stratum, it is characterized in that utilizing the blocking agent of vulcanized rubber powder for raw material, it is a kind of powder with certain viscosity, then this powder is joined in the load fluid of CMC polyacrylamide or β polymer and water preparation, form after be mixed with.
2, vulcanized rubber powder profile control according to claim 1, sealing agent; It is characterized in that the proportioning when this agent prepares is as follows:
Water+blocking agent (rubber powder)+load fluid (CMC, poly-propionyl enamine, β polymer); The wherein molecular weight of polyacrylamide: 300-500 ten thousand, thousand kilograms+80-150 of degree of hydrolysis 5-20%=1 kilogram+10 kilograms.
3, vulcanized rubber powder profile control according to claim 1, sealing agent; The physical performance index that it is characterized in that blocking agent (rubber powder) is: in every hectogram I type rubber blocking agent:
(1) wherein containing 40 order particle size diameters is 0.45 millimeter, and its ratio accounts for 47.1%;
(2) wherein containing 60 order particle size diameters is 0.3 millimeter, and its ratio accounts for 12.5%;
(3) wherein containing 80 order particle size diameters is 0.2 millimeter, its accounting example 20.6%;
(4) wherein containing 100 order particle size diameters is 0.15 millimeter, and its accounting example is 9.3%;
(5) wherein containing 200 order particle size diameters is 0.074 millimeter, and its accounting example is 10.5%.
In every hectogram II type rubber powder sealing agent
(6) wherein containing 40 order particle size diameters is 0.3 millimeter, and its ratio accounts for 46.4%;
(7) wherein containing 80 order particle size diameters is 0.2 millimeter, and its ratio accounts for 17.9%;
(8) wherein containing 100 order particle size diameters is 0.15 millimeter, and its ratio accounts for 13.5%;
(9) wherein containing 120 order particle size diameters is 0.1 millimeter, and its ratio accounts for 7.2%;
(10) wherein containing 200 order particle size diameters is 0.074 millimeter, and its ratio accounts for 15%.
Above-mentioned rubber powder density: 0.8-1.2, water insoluble, be shaped as solid microplate shape, flexible, changeability, abrasion resistance,
Need during preparation according to the formation porosity size select I type or II type rubber powder stifled, leak agent and join in water and the load fluid and prepare.
4, vulcanizate profile control according to claim 3, sealing agent, during the rubber powder that it is characterized in that selecting for use, select by following formula:
Φ=4-9 times of R
Φ: maximum rubber grain diameter
R: stratum average pore radius is promptly according to down-hole rock porosity parameter, and the rubber powder of choosing the different grain size diameter mixes with load fluid.
5. vulcanized rubber profile control sealing agent according to claim 1; It is characterized in that carrying liquid when using cementing concrete, when adding the mixing of 40 purpose rubber powders, its proportioning is pressed cementing concrete: vulcanized rubber powder=100: 1～3 preparation standards can be used for the well cementation gambling and leaks operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98118964 CN1218134A (en) | 1998-09-22 | 1998-09-22 | Vulcanized rubber powder blocking agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98118964 CN1218134A (en) | 1998-09-22 | 1998-09-22 | Vulcanized rubber powder blocking agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1218134A true CN1218134A (en) | 1999-06-02 |
Family
ID=5226187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98118964 Pending CN1218134A (en) | 1998-09-22 | 1998-09-22 | Vulcanized rubber powder blocking agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1218134A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079484C (en) * | 1999-08-19 | 2002-02-20 | 白云渡 | Section regulation process for interrupted water-injection depth of water injection well |
| CN101712863A (en) * | 2009-11-04 | 2010-05-26 | 北京德美高科科技有限责任公司 | Water plugging agent for carbonatite and preparation method and using method thereof |
| WO2010145189A1 (en) * | 2009-06-18 | 2010-12-23 | 东营泰尔石油技术有限公司 | Compressible and highly flexible plugging agent |
| CN102134978A (en) * | 2011-03-09 | 2011-07-27 | 中国地质大学（武汉） | Drill hole wall protecting and leakage plugging method or slope guide deviation drilling method and used device thereof |
| CN105038743A (en) * | 2015-06-11 | 2015-11-11 | 成都欧美克石油科技有限公司 | High-density cement slurry suitable for shale gas cementing and preparation method of high-density cement slurry |
| CN112143477A (en) * | 2019-06-28 | 2020-12-29 | 中国石油化工股份有限公司 | Silicate plugging agent system and application method thereof |
| CN114437684A (en) * | 2020-10-16 | 2022-05-06 | 中国石油化工股份有限公司 | Shielding temporary plugging agent for shallow casing leakage plugging and construction process thereof |
-
1998
- 1998-09-22 CN CN 98118964 patent/CN1218134A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079484C (en) * | 1999-08-19 | 2002-02-20 | 白云渡 | Section regulation process for interrupted water-injection depth of water injection well |
| WO2010145189A1 (en) * | 2009-06-18 | 2010-12-23 | 东营泰尔石油技术有限公司 | Compressible and highly flexible plugging agent |
| CN101712863A (en) * | 2009-11-04 | 2010-05-26 | 北京德美高科科技有限责任公司 | Water plugging agent for carbonatite and preparation method and using method thereof |
| CN102134978A (en) * | 2011-03-09 | 2011-07-27 | 中国地质大学（武汉） | Drill hole wall protecting and leakage plugging method or slope guide deviation drilling method and used device thereof |
| CN105038743A (en) * | 2015-06-11 | 2015-11-11 | 成都欧美克石油科技有限公司 | High-density cement slurry suitable for shale gas cementing and preparation method of high-density cement slurry |
| CN112143477A (en) * | 2019-06-28 | 2020-12-29 | 中国石油化工股份有限公司 | Silicate plugging agent system and application method thereof |
| CN112143477B (en) * | 2019-06-28 | 2022-09-30 | 中国石油化工股份有限公司 | Silicate plugging agent system and application method thereof |
| CN114437684A (en) * | 2020-10-16 | 2022-05-06 | 中国石油化工股份有限公司 | Shielding temporary plugging agent for shallow casing leakage plugging and construction process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2190942B1 (en) | Methods of using colloidal silica based gels | |
| EP2391692B1 (en) | Methods for servicing well bores with hardenable resin compositions | |
| CN100396880C (en) | Sand consolidation with flexible gel systems | |
| EP1092693B1 (en) | Crack and shatter resistant well cement | |
| CN104989361B (en) | A kind of method that auxiliary water horizontal well man-made fracture turns to transformation | |
| CN1888374A (en) | High-temperature and High-Salt resisting gel water packing-off method | |
| CN103897679A (en) | Leak stopping mud bearing high pressure and used for fractured leakage | |
| AU2013308769B2 (en) | Resin-based sealant compositions comprising cement kiln dust and methods of use | |
| CN109915093B (en) | Method for improving oil reservoir recovery ratio by integrating' plugging/regulating/flooding | |
| CN102533240B (en) | High-temperature oil reservoir composite modifying and flooding agent and preparing method and application thereof | |
| CN101787864A (en) | Method for plugging water from oil reservoir fractured water logging oil well developed by injecting water into low-permeable reservoir stratum | |
| CN1884346A (en) | Preparation method of fiber composite gelatin for plugging oil coat macropore | |
| CN102434124A (en) | Successive-compounding-process based plugging method for well drilling | |
| CN110617041B (en) | Water injection well water absorption profile adjusting method | |
| CN107541197B (en) | Intelligent water exploration type water plugging agent for high-temperature horizontal well | |
| CN106188403A (en) | A kind of anti-CO of high temperature and high salt oil deposit2has channeling blocking agent and preparation method thereof | |
| EP4155364A1 (en) | Bionic and dual-phobic high-performance water-based drilling fluid | |
| CN1218134A (en) | Vulcanized rubber powder blocking agent | |
| CN110593806B (en) | Large-dose multi-slug water plugging method | |
| CN1464173A (en) | Modified tannin extract gel water-plugging technique adapted for high temperature and high salt oil deposit | |
| CN107556996B (en) | CO (carbon monoxide)2Response in-situ gel channeling sealing agent and preparation method and application thereof | |
| CN103967466B (en) | PGZ closes down in oil field well restore exploitation and production-increasing technique | |
| RU2309248C1 (en) | Oil field development method | |
| CN113773820B (en) | Pressure-bearing leakage-blocking slurry and preparation method and application thereof | |
| CN106947448A (en) | A kind of high permeability zone profile control agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |