CN102877811B - Profile Control in Injection Well selective plugging ball and preparation method thereof and application - Google Patents
Profile Control in Injection Well selective plugging ball and preparation method thereof and application Download PDFInfo
- Publication number
- CN102877811B CN102877811B CN201210357107.2A CN201210357107A CN102877811B CN 102877811 B CN102877811 B CN 102877811B CN 201210357107 A CN201210357107 A CN 201210357107A CN 102877811 B CN102877811 B CN 102877811B
- Authority
- CN
- China
- Prior art keywords
- ball
- profile control
- selective plugging
- plugging ball
- rosin
- 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.)
- Active
Links
Abstract
The invention provides a kind of Profile Control in Injection Well selective plugging ball and preparation method thereof and application.Described selective plugging ball is made up of the mixture of rosin and industrial paraffin, specifically rosin is become fused mass with industrial paraffin Hybrid Heating or rosin and industrial paraffin is heated into after fused mass to mix, and pour mould into, cooling and the solid-state selective plugging ball product that obtains.This selective plugging ball can be applied to shutoff borehole in water injection well in oil fields subdivision injection interval, can improve flood effectiveness thus improve oil extraction output and oil recovery efficiency.
Description
Technical field
The present invention relates to a kind of Profile Control in Injection Well selective plugging ball and preparation method thereof and application, the tune specifically throwing profile control ball shutoff borehole in a kind of water injection well in oil fields subdivision injection interval blocks up ball, its preparation method and utilizes this selective plugging ball to improve flood effectiveness thus the method for raising oil extraction output and oil recovery efficiency.
Background technology
Ball injection profile control technique is mainly applied in inspissated pool thermal production well, cannot interlayer be caused to inhale the problem of vapour inequality by layer steam injection to solve because cover becomes.Prior art (the Cheng Xin that " utilizes pitching to select note technology to prevent viscous crude steam vapour from altering ", " Inner Mongol chemical industry ", 23rd phase P98-99 in 2009) according to heat note operating mode and Sealing Conditions, following technological requirement is proposed to selective plugging ball: 1. selective plugging ball relative density is: 0.9 ~ 1, to ensure that selective plugging ball can floating flowing in a fluid; 2. high temperature resistant 320 DEG C of selective plugging ball, withstand voltage 17MPa; 3. selective plugging ball can have good mechanical strength and certain elasticity at high temperature under high pressure, and on the one hand, under high-temperature and high-pressure conditions, stifled ball can not affect plugging effect because of breakage; On the other hand, under high-temperature and high-pressure conditions, stifled ball must have certain elasticity (320 DEG C, under 17MPa pressure, the borehole of shutoff about 12mm, spheroid insert depth is at about 3mm), namely can not follow the string and affect the effect of shutoff borehole, more can not become too soft because of selective plugging ball and be squeezed into borehole, blocking oil reservoir.4. the diameter of stifled ball is 22mm.During steam injection, metal ball, with steam flow direct shutoff high permeability formation borehole, stops steam to enter, completes profile control in pit shaft.
In recent years, above-mentionedly pitching is utilized to select note technology also to have for water injection well shutoff high permeability formation borehole, thus shutoff waterflood path, but be only limited to system note well, and be shutoff in pit shaft.Refer to " Studies on Technology of Water Injectivity " (Sun Tongwen etc., " oilfield chemistry ", 1 phase P20-22 in 2003), wherein at the large interval of water injection well water absorption, with inject that water synchronously flows, diameter slightly larger than borehole direct homogeneous rigidity plastics ball, by on the tangible borehole of pressing under difference between reservoir pre ssure and injection pressure effect, borehole is blocked, makes injection current direction and enter other intervals.In addition, prior art document " theoretical and experimental study of water injection well ball injection profile control technique " (Sun Tongwen etc., " oilfield chemistry ", 2003Vol.20No.2P.113-118); " ball injection profile control technology is in the application of waterflooding reservoir " (Xue Lei, " Inner Mongol petrochemical industry ", the 10th phase P142 in 2010); " ball injection profile control adjustment reservoir water cross-section techniques " (Shao Chen, Wang Huaiming, " Worker's Univ. Shengli Oil Field's journal " Vol.23No.1P44-45) is also studied report to the technology of same principle.CN2597662Y discloses a kind of composite unidirection ball injection stop, be made up of oil pipe and tubing string, tubing nipple, unidirectional resistive device, righting stop, after ball injection profile control or pitching work-in-progress control, the forward and reverse well-flushing of energy, profile control ball certain area near oil reservoir does not flow away with current, enhances the long-time stability of profile control effect.
But, in practical application, because the water filling block had exists the problems such as substratum is many, interlayer is thin, what cause water injection string to divide is thinner, this just causes in the little interval of dispensing still exists interlayer and to absorb water uneven problem, and the interval of dispensing, due to reasons such as Water-filling nozzle throttlings, is not easy to take chemical profile control technique, more cannot implements the ball injection profile control in layering well section.
Summary of the invention
Main purpose of the present invention is to provide a kind of Profile Control in Injection Well selective plugging ball, and the tune specifically throwing profile control ball shutoff borehole in a kind of subdivision injection interval blocks up ball, to improve flood effectiveness, thus improves oil extraction output and oil recovery efficiency.
Another object of the present invention is to the preparation method that described Profile Control in Injection Well selective plugging ball is provided.
Another object of the present invention is to the application that described Profile Control in Injection Well selective plugging ball is provided, specifically its application in Profile Control in Injection Well process.
On the one hand, the invention provides a kind of Profile Control in Injection Well selective plugging ball, it is made up of the mixture of rosin and industrial paraffin.
Be rigidity plastics ball compared to traditional selective plugging ball, the present invention revolutionizes the material of selective plugging ball, adopts the mixture of rosin and industrial paraffin to prepare selective plugging ball.
The transparent solid of a kind of micro-Huang to yellowish red color under rosin normal temperature, its softening point 70 ~ 90 DEG C, proportion 1.070 ~ 1.085g/cm
3; The proportion of paraffin is 0.78 ~ 0.82g/cm
3, softening point 55 ~ 75 DEG C.
For rosin and the paraffin of every batch, accurately its density must be measured.
According to specific embodiment of the invention scheme, be that the mixed proportion of adjustment rosin and paraffin makes the density of selective plugging ball be 0.9 ~ 1g/cm
3.
According to specific embodiment of the invention scheme, the mixed proportion of described rosin and paraffin is generally: rosin blend range is approximately 24% ~ 41%, and paraffin blend range is approximately 76% ~ 59%.
According to specific embodiment of the invention scheme, Profile Control in Injection Well selective plugging ball of the present invention rosin is become fused mass with industrial paraffin Hybrid Heating or rosin and industrial paraffin is heated into after fused mass mix, and pour mould into, cooling and the solid-state selective plugging ball product that obtains.
The present invention with adjusting in the past another difference of stifled ball was: changing borehole shutoff is outward shutoff in borehole, according to specific embodiment of the invention scheme, Profile Control in Injection Well selective plugging ball of the present invention, for the purpose of its diameter oil-layer blasthole diameter 70 ~ 90%.Selective plugging ball is slightly less than borehole, can enter in borehole and carry out profile control.
On the other hand, present invention also offers the preparation method of described Profile Control in Injection Well selective plugging ball, the method comprises:
Rosin is become fused mass with industrial paraffin Hybrid Heating, or rosin and industrial paraffin is heated into after fused mass and mixes, then pour the rosin of melting and the mixture of industrial paraffin into mould, cooling, obtains solid-state selective plugging ball product.
On the other hand, present invention also offers the application of described Profile Control in Injection Well selective plugging ball, specifically its application in water injection well in oil fields profile control, more specifically described selective plugging ball is used for ball-off borehole in water injection well in oil fields subdivision injection interval.
When utilizing selective plugging ball of the present invention to carry out water injection well in oil fields profile control, can utilize existing pitching device that selective plugging ball pushing belt is entered well, enter oil reservoir by borehole.Such as, specifically can carry out according to following operation:
1, according to geologic requirements, water injection well is divided into several interval according to formation condition, then selects according to the formation condition of the substratum in each interval the interval needing dispensing ball injection profile control selective plugging ball profile control;
2, select the dispensing ball injection profile control selective plugging ball of respective numbers according to the substratum geological conditions needed in ball injection profile control interval, blasthole number and borehole aperture, the quantitative commitments of ball can block needs shutoff borehole and be as the criterion;
3, dispensing ball injection profile control selective plugging ball is loaded the Sheng cage Inner of ball injection profile control injection well downhole flow regulator on ground, and baffle plate is installed;
4, successively tubing string is connected by dispensing requirement, lower to completion after planned well section;
5, after discharging profile control ball, normal water filling can reach requirement.
In sum, provide in a kind of subdivision injection interval the tune throwing profile control ball shutoff borehole and block up ball, ball injection profile control in the pit shaft being applied to separate injection interval in oil-field flooding later stage separate water injection well, realize the shutoff to water stream channel, to improve plane and the interlayer contradiction of separate injection interval oil reservoir, the intake profile of water injection well is made to become more balanced, expand water drive swept volume, thus can flood effectiveness be improved, improving oil extraction output and oil recovery efficiency, laying the foundation for realizing water injection well in oil fields subdivision injection ball injection profile control integral process.The present invention has following beneficial effect:
1, with low cost, Meteorological is low, compared with existing subdivision injection technique, only increases the expense of dispensing ball injection profile control ball, comparatively chemical profile control technology reduce great amount of cost;
2, use safety, environmental protection, comparatively chemical profile control technique is compared, environmental protection more, safety;
3, profile control ball used is slightly less than borehole, can enter in borehole and carry out profile control;
If 4 actual plugging strengths are higher, cause water injection pressure too high, do not meet field requirement, the method for heating can be adopted dispensing ball injection profile control selective plugging ball fusing de-plugging, that is, profile control ball used can block up and can separate.
5, technique is simple, only uses tubing string to connect and both can complete, simple, convenient.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
Embodiment 1
Become by the rosin 24% of proportion 1.070 proportion to be the fused mass of 1.00g/cm3 with proportion 0.78 paraffin 76% Hybrid Heating, pour in the mould of 6mm diameter, except burr removing after cooling, get product (this finished diameter about for the purpose of oil-layer blasthole diameter 80%).
When utilizing selective plugging ball of the present invention to carry out water injection well in oil fields profile control, selective plugging ball pushing belt is entered well by " water injection well in oil fields subdivision injection ball injection profile control integrated pipe column " by prior art, and enter oil reservoir by borehole, concrete operations are as follows:
1, according to Jin2-12-503Jing water suction situation, water injection well is divided into two intervals according to formation condition, places at bottom interval and adjust stifled ball.
2, according to the substratum geological conditions needed in profile control interval, 200, profile control selective plugging ball is selected.
3, dispensing ball injection profile control selective plugging ball is loaded the Sheng cage Inner of water injection well subdivision injection ball injection profile control integrated pipe column injection well downhole flow regulator (prior art) on ground, and baffle plate is installed.
4, successively tubing string is connected by dispensing requirement, lower to completion after planned well section.
5, after discharging profile control ball, normal water filling.
6, after construction, water injection pressure, by 2.5MPa, rises to 3.05MPa.
7, after constructing three months, corresponding oil well brocade 99-34-26 side well, creation data is by day production fluid 31.3m
3, day produce oil 0.3t, moisture 99%, be changed to a day production fluid 29.8m
3, day produce oil 0.9t, moisture 98%, see certain oil increasing precipitation effect.
Claims (2)
1. the Profile Control in Injection Well application of selective plugging ball in water injection well in oil fields profile control, wherein, be that described selective plugging ball is used for ball-off borehole in water injection well in oil fields subdivision injection interval, described Profile Control in Injection Well selective plugging ball is made up of the mixture of rosin and industrial paraffin; The softening point of described rosin 70 ~ 90 DEG C, proportion 1.070 ~ 1.085g/cm
3; The softening point of described paraffin 55 ~ 75 DEG C, proportion 0.78 ~ 0.82g/cm
3; And the mixed proportion of adjustment rosin and paraffin makes the density of selective plugging ball be 0.9 ~ 1g/cm
3; Further, this selective plugging ball rosin is become fused mass with industrial paraffin Hybrid Heating or rosin and industrial paraffin are heated into after fused mass to mix, and pour mould into, cooling and the solid-state selective plugging ball product that obtains; For the purpose of the diameter of this selective plugging ball oil-layer blasthole diameter 70% ~ 90%.
2. the application of Profile Control in Injection Well selective plugging ball according to claim 1 in water injection well in oil fields profile control, wherein, the mixed proportion of described rosin and paraffin is: rosin 24% ~ 41%, paraffin 76% ~ 59%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357107.2A CN102877811B (en) | 2012-09-21 | 2012-09-21 | Profile Control in Injection Well selective plugging ball and preparation method thereof and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357107.2A CN102877811B (en) | 2012-09-21 | 2012-09-21 | Profile Control in Injection Well selective plugging ball and preparation method thereof and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877811A CN102877811A (en) | 2013-01-16 |
| CN102877811B true CN102877811B (en) | 2016-02-10 |
Family
ID=47479301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210357107.2A Active CN102877811B (en) | 2012-09-21 | 2012-09-21 | Profile Control in Injection Well selective plugging ball and preparation method thereof and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102877811B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273350B (en) * | 2015-11-09 | 2017-07-28 | 中国石油天然气股份有限公司 | One kind adjusts stifled ball and preparation method thereof |
| CN105370238B (en) * | 2015-11-18 | 2017-12-05 | 中国石油天然气股份有限公司 | A kind of choosing method and device for adjusting stifled ball density and diameter |
| CN108329899A (en) * | 2018-02-20 | 2018-07-27 | 盘锦众帮商贸有限公司 | A kind of stifled ball of isodensity tune |
| CN111827917A (en) * | 2019-04-22 | 2020-10-27 | 中国石油天然气股份有限公司 | Fireflooding gas injection well ball injection profile control process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4233162A (en) * | 1978-02-07 | 1980-11-11 | Halliburton Company | Oil well fluids and dispersants |
| CN1597837A (en) * | 2004-08-05 | 2005-03-23 | 北京卓辰基业技术开发有限公司 | Water-solubility acidity temporary plugging agent for press cracking |
| CN102504779A (en) * | 2011-12-21 | 2012-06-20 | 中国石油天然气股份有限公司 | Paraffin rosin water plugging agent for water plugging of thick oil huff-puff well and water plugging construction method |
| CN102606118A (en) * | 2012-03-28 | 2012-07-25 | 中国石油天然气股份有限公司 | Subdivision water injection, ball-off and profile control integrated tubular column for water injection well of oilfield and process of tubular column |
-
2012
- 2012-09-21 CN CN201210357107.2A patent/CN102877811B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4233162A (en) * | 1978-02-07 | 1980-11-11 | Halliburton Company | Oil well fluids and dispersants |
| CN1597837A (en) * | 2004-08-05 | 2005-03-23 | 北京卓辰基业技术开发有限公司 | Water-solubility acidity temporary plugging agent for press cracking |
| CN102504779A (en) * | 2011-12-21 | 2012-06-20 | 中国石油天然气股份有限公司 | Paraffin rosin water plugging agent for water plugging of thick oil huff-puff well and water plugging construction method |
| CN102606118A (en) * | 2012-03-28 | 2012-07-25 | 中国石油天然气股份有限公司 | Subdivision water injection, ball-off and profile control integrated tubular column for water injection well of oilfield and process of tubular column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102877811A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107387053B (en) | Method for collaborative fracturing of main cracks and complex crack network of large channel | |
| CN105086967B (en) | A kind of anti-channeling is stifled to alter agent and is carried out adjusting the construction method for blocking and altering with it | |
| CN106947451A (en) | A kind of compound profile modification system and carried out adjusting stifled construction method with it | |
| CN105422068B (en) | The method of horizontal well in segments volume fracturing and frac-pack combination and exploitation heavy crude reservoir | |
| WO2021196740A1 (en) | Temporary plugging agent and preparation method therefor, and temporary plugging deflection fracturing method for high temperature reservoir | |
| CN102877811B (en) | Profile Control in Injection Well selective plugging ball and preparation method thereof and application | |
| CN103113871B (en) | Middle high temperature oil field Profile Control in Injection Well selective plugging ball and preparation method and application | |
| CN106194145A (en) | A kind of the most stifled multistage degree of depth network acid fracturing method | |
| CN100419208C (en) | Multi-block equal-fluidity energy-gathering parallel synchronous oil displacement method for heterogeneous oil reservoir | |
| CN105625993B (en) | Hot dry rock multi-cycle heating system and its production method | |
| CN205778790U (en) | Stratified Waterflooding and injection and extraction system | |
| CN104653148A (en) | Well group reforming comprehensive utilization method for waste oil wells | |
| CN101915079B (en) | Integrated de-plugging yield increasing process | |
| CN113464087B (en) | Selective water plugging method for bottom water reservoir high-water-cut oil well | |
| CN102533240A (en) | High-temperature oil reservoir composite modifying and flooding agent and preparing method and application thereof | |
| CN103087699A (en) | Sand-carrying profile control agent composition of fracture-cave type oil deposit and profile control method of profile control agent | |
| CN106194104B (en) | A kind of water injection well in oil fields profile control technology | |
| CN107541197A (en) | A kind of intelligent water detection type high-temperature water horizontal well water shutoff agent | |
| CN104847322A (en) | Method for improving recovery efficiency for deep common thickened oil water drive-converting into-steam flooding | |
| CN106089168A (en) | A kind of method of medium to high permeable oil reservoir integral profile control | |
| CN112343560A (en) | Fracturing and sand prevention combined process method for exploiting low-permeability reservoir natural gas hydrate | |
| CN102051161A (en) | Thick oil huff and puff deep channel blocking system and injection method thereof | |
| CN109536146B (en) | Plastic particle type profile control agent, preparation method and application thereof | |
| CN109113698A (en) | A kind of profile control method based on temperature control phase-change material | |
| CN109439306A (en) | Extra permeability oilfield selectivity Application of weak gel profile agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |