[go: up one dir, main page]

WO2007006239A1 - An extracting remaining oil method using horizontal wells to inject profile control agent for blocking water injection channel of oil reservoir - Google Patents

An extracting remaining oil method using horizontal wells to inject profile control agent for blocking water injection channel of oil reservoir Download PDF

Info

Publication number
WO2007006239A1
WO2007006239A1 PCT/CN2006/001678 CN2006001678W WO2007006239A1 WO 2007006239 A1 WO2007006239 A1 WO 2007006239A1 CN 2006001678 W CN2006001678 W CN 2006001678W WO 2007006239 A1 WO2007006239 A1 WO 2007006239A1
Authority
WO
WIPO (PCT)
Prior art keywords
well
oil
horizontal well
profile control
horizontal
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.)
Ceased
Application number
PCT/CN2006/001678
Other languages
French (fr)
Chinese (zh)
Inventor
Shengcun Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2007006239A1 publication Critical patent/WO2007006239A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/20—Displacing by water
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
    • E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well

Definitions

  • the invention belongs to petroleum exploitation, and particularly relates to a method for sealing the remaining oil of the oil layer water injection channel by using a horizontal well injection profile control agent.
  • the horizontal well injection profile control agent of the present invention blocks the oil layer of the oil layer to extract residual oil in order to overcome the deficiencies of the prior art.
  • a method of using the horizontal well profile control to seal the water injection channel to extract the remaining oil is envisaged.
  • the method encapsulates the water injection channel by injecting a profile control agent into the water injection channel by a horizontal well group perpendicular to the mainstream water line, so that the injection water is forced to change the flow direction to wash the remaining oil in the detention area, thereby achieving the purpose of water shutoff and oil recovery. .
  • the technical solution adopted by the horizontal well injection profile control agent for sealing the oil layer water injection channel of the present invention is as follows: In the injection and drainage row of the oil layer plane geological structure, the horizontal well group perpendicular to the mainstream water line direction is used. Inject the profile control agent and block the water injection channel.
  • the production well pattern laid out by the five-point method is used to drill a horizontal well group perpendicular to the mainstream water line between the well rows, and the profile control agent is injected through the well group to block the water injection passage between the remaining oil blocks. . Then, the vertical well row on one side of the horizontal well is changed to the water injection well row, and the vertical well row on the other side is changed to the oil production well row.
  • the horizontal profile control injection well group can also be utilized to extract the remaining oil.
  • the horizontal well a is injected into the profile control agent
  • the horizontal well b is used as the injection well
  • the horizontal well c is used as the production well
  • the water injection through the b well the ablation of the a well is blocked
  • the production of the c well is a.
  • the remaining oil in the well is rushed to the c well; then the horizontal profile c is injected into the profile control agent, the horizontal well a is changed to the injection well, and the horizontal well d is changed to the sputum oil well to mine the remaining oil at the c well;
  • the alternating function of the flat well function is to produce the remaining oil at each horizontal well.
  • the profile control agent is: a high molecular weight organic polymer such as a high molecular weight polyallyl ammonium.
  • the horizontal well injection profile control agent of the invention blocks the remaining oil of the oil layer water injection channel, has a reasonable design, low investment and high benefit.
  • Figure 1 is a schematic diagram of a five-point layout of a production well network.
  • FIG. 2 is a schematic diagram of the five-point residual oil of the horizontal profile control well group in the horizontal well profiled well group of the method for sealing the remaining oil of the oil layer water injection channel by the horizontal well injection profile control agent of the present invention.
  • Fig. 3 is a schematic view showing the remaining oil produced by the horizontal profile injection injection well group of the horizontal well injection profile control agent for sealing oil layer water injection in the present invention.
  • the horizontal section of the horizontal well can reach 1000 meters in length.
  • the invention utilizes a production well network laid out by a five-point method, and drills a horizontal well group in a remaining oil-rich block between the well rows, and injects a profile control agent through the horizontal well (a shallow profile radius of 5 meters can block 10
  • the thick layer of oil blocks the water injection channel between the remaining oil blocks, and then changes the vertical well row on one side of the horizontal profile control well to the injection well row, and the vertical well row on the other side to the production well row, as shown in Figure 2. Shown.
  • the water injection channel will be blocked by the profile control agent.
  • the injected water can only flow in the direction indicated by the arrow in Figure 2. The result of the flow is to flush the crude oil in the remaining oil enrichment area to the production well to achieve the purpose of water shutoff and oil recovery.
  • the horizontal oil profile injection well group can also be used to extract the remaining oil according to the distribution of the remaining oil in the oil layer, as shown in Fig. 3.
  • the horizontal well group the horizontal well a is injected into the profile control agent, the horizontal well b is used as the injection well, and the horizontal well c is used as the production well, and the remaining oil at the horizontal well a is produced.
  • the horizontal well c is injected into the profile control agent, the horizontal well a is changed to the injection well, the horizontal well d is changed to the oil well, and the remaining oil at the horizontal well c is recovered.
  • the remaining oil at each horizontal well is produced by alternating interchange of horizontal well functions.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Railway Tracks (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

An extracting remaining oil method comprises the injection of a profile control agent by horizontal wells to block the water-injection channel of oil layers. The method utilizes a horizontal well group vertical to the master flow-line direction to add a profile control agent to stop the water-injection channel in the filling and exploiting arrays of a plane oil geologic structure. After the original water channel is filled with the horizontal profile control agent, the water is forced to change its direction to flush the residual oil to be exploited by lower reach production wells.

Description

水平井注调剖剂封堵油层注水道开采剩余油的方法 发明领域  Method for sealing residual oil in oil layer water injection channel by horizontal well injection profile control agent

本发明属于石油开采， 特别涉及利用水平井注调剖剂封堵油 层注水道开采剩余油的方法。  The invention belongs to petroleum exploitation, and particularly relates to a method for sealing the remaining oil of the oil layer water injection channel by using a horizontal well injection profile control agent.

发明背景 Background of the invention

大庆油田经过多年开发， 各油层滞留区存在大量的剩余油无 法开采。 目前， 水平井钻井技术已经成熟， 如果用水平井直接采 油（或注水）， 由于水平井水平段渗透率的差异， 使得几米长的高 渗透段的产液（含水较高）就可占据水平井狹窄的流动空间， 致 使含油较高的低渗段产液难于进入水平井。 因此水平井直接采油 的方式仍难于开采剩余油， 这也是水平井直接采油无法推广的重 要因素。  After years of development in Daqing Oilfield, a large amount of remaining oil in the stagnant areas of each oil layer cannot be mined. At present, the horizontal well drilling technology has matured. If the horizontal well is directly used for oil production (or water injection), due to the difference in the horizontal permeability of the horizontal well, the production fluid (higher water content) of the high permeability section of several meters long can occupy the horizontal well stenosis. The flow space makes it difficult to enter the horizontal well in the low-permeability section with high oil content. Therefore, the direct oil recovery method of horizontal wells is still difficult to extract the remaining oil, which is also an important factor that can not be promoted by horizontal well production.

发明内容 Summary of the invention

本发明的水平井注调剖剂封堵油层注水道开采剩余油的方 法， 在于克服现有技术的不足。根据均质油层剩余油分布规律， 设想出利用水平井调剖封堵注水道来开采剩佘油的方法。 该方法 通过垂直于主流水线的水平井组在注水道处注入调剖剂的方式， 来封堵注水通道， 使注入水被迫改变流动方向来冲刷滞留区的剩 余油， 达到堵水采油的目的。  The horizontal well injection profile control agent of the present invention blocks the oil layer of the oil layer to extract residual oil in order to overcome the deficiencies of the prior art. According to the distribution rule of the remaining oil in the homogeneous oil layer, a method of using the horizontal well profile control to seal the water injection channel to extract the remaining oil is envisaged. The method encapsulates the water injection channel by injecting a profile control agent into the water injection channel by a horizontal well group perpendicular to the mainstream water line, so that the injection water is forced to change the flow direction to wash the remaining oil in the detention area, thereby achieving the purpose of water shutoff and oil recovery. .

本发明的水平井注调剖剂封堵油层注水道开采剩余油的方法 所釆用的技术方案是： 在油层平面地质结构的注、 采井排中， 利 用垂直于主流水线方向的水平井组注入调剖剂， 阻断注水通道。  The technical solution adopted by the horizontal well injection profile control agent for sealing the oil layer water injection channel of the present invention is as follows: In the injection and drainage row of the oil layer plane geological structure, the horizontal well group perpendicular to the mainstream water line direction is used. Inject the profile control agent and block the water injection channel.

作为本发明的进一步改进， 利用五点法布局的采油井网， 在 井排间钻垂直于主流水线的水平井組， 并通过该井组注入调剖剂 阻断剩余油区块间的注水通道。 然后将该水平井一侧的垂直井排 改为注水井排， 另一侧的垂直井排改为采油井排。 原注水道被水 平调剖井封堵后， 水流被迫改变方向冲刷剩余油， 并被下游采油 井采出。 As a further improvement of the present invention, the production well pattern laid out by the five-point method is used to drill a horizontal well group perpendicular to the mainstream water line between the well rows, and the profile control agent is injected through the well group to block the water injection passage between the remaining oil blocks. . Then, the vertical well row on one side of the horizontal well is changed to the water injection well row, and the vertical well row on the other side is changed to the oil production well row. Original water injection channel by water After the flat-sealing well is plugged, the water flow is forced to change direction to wash the remaining oil and is produced by the downstream production well.

作为本发明的更进一步改进，根据油层中剩余油的分布情况， 也可利用水平调剖注采井组来开采剩余油。 在水平井組中， 将水 平井 a注入调剖剂、水平井 b作为注水井、水平井 c作为采油井， 通过 b井的注水、 a井的调剖堵水、 c井的采油， 将 a井处的剩余 油冲到 c井处采出； 然后通过水平井 c注入调剖剂、 水平井 a改 为注水井、 水平井 d改为釆油井来开采 c井处的剩余油； 通过各 水平井功能的交替互换， 将每口水平井处的剩余油采出。  As a further improvement of the present invention, depending on the distribution of remaining oil in the oil layer, the horizontal profile control injection well group can also be utilized to extract the remaining oil. In the horizontal well group, the horizontal well a is injected into the profile control agent, the horizontal well b is used as the injection well, the horizontal well c is used as the production well, the water injection through the b well, the ablation of the a well is blocked, and the production of the c well is a. The remaining oil in the well is rushed to the c well; then the horizontal profile c is injected into the profile control agent, the horizontal well a is changed to the injection well, and the horizontal well d is changed to the sputum oil well to mine the remaining oil at the c well; The alternating function of the flat well function is to produce the remaining oil at each horizontal well.

所述的调剖剂是： 高分子量有机聚合物， 如高分子量聚丙乙 烯铵。  The profile control agent is: a high molecular weight organic polymer such as a high molecular weight polyallyl ammonium.

本发明的水平井注调剖剂封堵油层注水道开采剩余油的方法 设计合理、 投资少、 效益高。  The horizontal well injection profile control agent of the invention blocks the remaining oil of the oil layer water injection channel, has a reasonable design, low investment and high benefit.

附图说明 DRAWINGS

图 1是五点法布局采油井网示意图。  Figure 1 is a schematic diagram of a five-point layout of a production well network.

图 2是本发明的水平井注调剖剂封堵油层注水道开采剩余油 的方法的水平调剖井组开采五点法剩余油示意图。  2 is a schematic diagram of the five-point residual oil of the horizontal profile control well group in the horizontal well profiled well group of the method for sealing the remaining oil of the oil layer water injection channel by the horizontal well injection profile control agent of the present invention.

图 3是本发明的水平井注调剖剂封堵油层注水道开采剩余油 的方法的水平调剖注采井组开采剩余油示意图。  Fig. 3 is a schematic view showing the remaining oil produced by the horizontal profile injection injection well group of the horizontal well injection profile control agent for sealing oil layer water injection in the present invention.

具体实施方式 detailed description

实施例 1  Example 1

以五点法布井的均盾油层中， 注、 采井附近水流冲刷最强， 离油水井较远处水流冲刷最弱。 因此油层剩余油富集在图 1所示 阴影位置处， 注入水按箭头所示注水道流动， 阴影部分的滞留区 剩余油等难以受到冲刷。 如果直接利用水平井开采剩余油区块的 油， 那么进入水平井的产液仍为主流道来液或高渗透段来液， 图 1 所示， 剩余油等仍无法开采， 含水也无法下降。 因此， 不能用 水平井进行直接采油。 在这方面， 大庆油田采油六厂就有失败的 实例， 六厂曾利用水平井直接采油， 结果高水淹区的水上来后， 产液含水直线上升， 最终使这口井成为废井。 In the uniform shield oil layer with the five-point method, the water flow near the injection well is the strongest, and the water flow is the weakest from the oil well. Therefore, the remaining oil in the oil layer is enriched in the shaded position shown in Fig. 1, and the injected water flows in the water injection passage indicated by the arrow, and the remaining oil in the stagnant portion of the shaded portion is hard to be washed. If the oil in the remaining oil block is directly exploited by the horizontal well, the liquid entering the horizontal well is still the main channel liquid or the high permeability section. As shown in Fig. 1, the remaining oil is still unable to be mined, and the water content cannot be lowered. Therefore, cannot be used Horizontal wells are used for direct oil recovery. In this respect, the No. 6 Oil Production Plant in Daqing Oilfield has failed examples. The Sixth Plant used direct horizontal oil recovery. As a result, after the water in the high flooded area came, the water content of the liquid produced rose linearly, eventually making the well a waste well.

目前， 水平井水平段的长度可达到 1000米。本发明是利用五 点法布局的采油井网， 在井排间剩余油富集区块钻水平井組， 并 通过该水平井注入调剖剂（浅调剖半径 5米， 就可封堵 10米厚的 层油） 阻断剩余油区块间的注水道， 然后将水平调剖井一侧的垂 直井排改为注水井排， 另一侧垂直井排改为采油井排， 如图 2所 示。 注水道将被调剖剂堵塞， 注入水只能按图 2箭头所示方向流 动， 其流动结果是将剩余油富集区内的原油冲到采油井处， 从而 达到堵水采油的目的。  At present, the horizontal section of the horizontal well can reach 1000 meters in length. The invention utilizes a production well network laid out by a five-point method, and drills a horizontal well group in a remaining oil-rich block between the well rows, and injects a profile control agent through the horizontal well (a shallow profile radius of 5 meters can block 10 The thick layer of oil) blocks the water injection channel between the remaining oil blocks, and then changes the vertical well row on one side of the horizontal profile control well to the injection well row, and the vertical well row on the other side to the production well row, as shown in Figure 2. Shown. The water injection channel will be blocked by the profile control agent. The injected water can only flow in the direction indicated by the arrow in Figure 2. The result of the flow is to flush the crude oil in the remaining oil enrichment area to the production well to achieve the purpose of water shutoff and oil recovery.

实施例 1  Example 1

作为本发明的同一发明构思，根据油层中剩余油的分布情况， 也可利用水平调剖注采井组来开采剩余油， 如图 3所示。 在水平 井组中， 将水平井 a注入调剖剂、 水平井 b作为注水井、 水平井 c作为采油井， 将水平井 a处的剩佘油采出。 然后再将水平井 c 注入调剖剂、 水平井 a改为注水井、 水平井 d改为釆油井， 将水 平井 c处的剩余油采出。 通过各水平井功能的交替互换， 将每口 水平井处的剩余油采出。  As the same inventive concept of the present invention, the horizontal oil profile injection well group can also be used to extract the remaining oil according to the distribution of the remaining oil in the oil layer, as shown in Fig. 3. In the horizontal well group, the horizontal well a is injected into the profile control agent, the horizontal well b is used as the injection well, and the horizontal well c is used as the production well, and the remaining oil at the horizontal well a is produced. Then, the horizontal well c is injected into the profile control agent, the horizontal well a is changed to the injection well, the horizontal well d is changed to the oil well, and the remaining oil at the horizontal well c is recovered. The remaining oil at each horizontal well is produced by alternating interchange of horizontal well functions.

Claims

O 2007/006239 O 2007/006239 1. 水平井注调剖剂封堵油层注水道开采剩余油的方法， 其特 征是在油层平面地质结构的注、 采井排中， 利用垂直于主流水线 方向的水平井组注入调剖剂， 阻断注水通道及大孔道。 1. Horizontal well injection profile control agent for sealing the remaining oil in the oil layer water injection channel, characterized in that in the injection and drainage row of the plane geological structure of the oil layer, the profile control agent is injected into the horizontal well group perpendicular to the main water line direction, Block the water injection channel and the large channel. 2. 如权利要求 1所述的水平井注调剖剂封堵油层注水道开采 剩余油的方法， 其特征是， 在五点法注采井网中， 在富集剩余油 区块间钻水平井组， 该水平井組方向垂直于主流水线方向， 并调 整五点法井网为行列井网， 使每口水平井一侧均为注水井， 另一 侧均为采油井， 然后通过该水平井組注入调剖剂阻断剩余油区块 间的注水通道，使注入水被迫改变流动方向而向剩余油方向流动， 从而将剩余油冲刷到下游， 利用下游井将这些剩余油采出。  2. The horizontal well injection profile control agent according to claim 1 for sealing a residual oil in an oil layer water injection channel, characterized in that, in a five-point method injection well network, water is drilled between enriched remaining oil blocks In the Pingjing Formation, the horizontal well group direction is perpendicular to the main waterline direction, and the five-point well pattern network is adjusted to be a row well network, so that one side of each horizontal well is a water injection well, and the other side is a production well, and then passes through the horizontal well. The group injects the profile control agent to block the water injection channel between the remaining oil blocks, so that the injected water is forced to change the flow direction and flow toward the remaining oil, thereby flushing the remaining oil to the downstream, and the remaining oil is taken out by the downstream well. 3. 如权利要求 1所述的水平井注调剖剂封堵油层注水道开采 剩余油的方法， 其特征是， 在水平井组中， 将水平井（a)注入调 剖剂、 水平井 （b)作为注水井、 水平井 （c)作为采油井， 通过 3. The method according to claim 1, wherein the horizontal well (a) is injected into the profile control agent and the horizontal well (in the horizontal well group). b) as a water injection well, horizontal well (c) as a production well, through (b) 井的注水、 （a) 井的调剖堵水、 （c) 井的采油， 将（a)井 处的剩余油冲到 （c) 井处采出； 然后通过水平井 （c)注入调剖 剂、 水平井 （a) 改为注水井、 水平井 （d) 改为采油井来开采水 平井（c)处的剩余油； 通过各水平井功能的交替互换， 将每口水 平井处的剩佘油采出。 (b) water injection from the well, (a) profile control and water shutoff in the well, (c) oil recovery from the well, rushing the remaining oil at the well ( a ) to the well at (c); then through the horizontal well ( c ) Injecting profile control agent, horizontal well (a) to injection well, horizontal well (d) to production well to mine residual oil at horizontal well (c); each horizontal well is exchanged by alternating interchange of horizontal well functions The remaining oil is produced.
PCT/CN2006/001678 2005-07-14 2006-07-14 An extracting remaining oil method using horizontal wells to inject profile control agent for blocking water injection channel of oil reservoir Ceased WO2007006239A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2005100101910A CN100467826C (en) 2005-07-14 2005-07-14 Method of injecting profile control agent into horizontal well to plug water injection channel of reservoir and recover remaining oil
CN200510010191.0 2005-07-14

Publications (1)

Publication Number Publication Date
WO2007006239A1 true WO2007006239A1 (en) 2007-01-18

Family

ID=36139146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/001678 Ceased WO2007006239A1 (en) 2005-07-14 2006-07-14 An extracting remaining oil method using horizontal wells to inject profile control agent for blocking water injection channel of oil reservoir

Country Status (2)

Country Link
CN (1) CN100467826C (en)
WO (1) WO2007006239A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113309505A (en) * 2020-02-26 2021-08-27 中国石油化工股份有限公司 Adjusting method for flow channel of water injection well of weathering crust karst reservoir
CN113309500A (en) * 2020-02-26 2021-08-27 中国石油化工股份有限公司 Tahe carbonate reservoir water injection well group flow channel adjusting method
CN114592837A (en) * 2020-12-04 2022-06-07 中国石油天然气股份有限公司 The injection-production adjustment method in the high water-cut period for horizontal wells facing the injection-production well pattern
CN115807645A (en) * 2021-09-13 2023-03-17 中国石油天然气股份有限公司 Water plugging method for oil-water well

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102364041B (en) * 2011-10-26 2014-03-26 王胜存 Oil extraction method for establishing oil permeable water stop sieve by filling fusheng sand in horizontal well fracture
US8910712B2 (en) * 2011-10-31 2014-12-16 Chevron U.S.A. Inc. System and method for converting class II hydrate reservoirs
CN106401480A (en) * 2016-11-29 2017-02-15 中国石油天然气股份有限公司 Combined process of horizontal drilling and profile control plugging
CN106894800B (en) * 2017-02-23 2019-05-21 中国海洋石油集团有限公司 A kind of profile control well selection decision-making technique suitable for Offshore Heavy Oil Field oil reservoir
CN109162685B (en) * 2018-07-25 2021-11-30 中国石油天然气股份有限公司 Mining method of top water oil sands
CN109339753A (en) * 2018-09-14 2019-02-15 山东石大油田技术服务股份有限公司 A method of well pattern is remolded using directional sidetracking adjustment water injection well target position
CN110485974A (en) * 2019-04-19 2019-11-22 中国石油天然气股份有限公司 A kind of Profile Control in Injection Well method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129182A (en) * 1977-02-28 1978-12-12 Standard Oil Company (Indiana) Miscible drive in heterogeneous reservoirs
US4299284A (en) * 1979-12-05 1981-11-10 Texaco Inc. High sweep efficiency enhanced oil recovery process
US5320170A (en) * 1992-07-30 1994-06-14 Texaco Inc. Oil recovery process employing horizontal and vertical wells in a modified inverted 5-spot pattern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129182A (en) * 1977-02-28 1978-12-12 Standard Oil Company (Indiana) Miscible drive in heterogeneous reservoirs
US4299284A (en) * 1979-12-05 1981-11-10 Texaco Inc. High sweep efficiency enhanced oil recovery process
US5320170A (en) * 1992-07-30 1994-06-14 Texaco Inc. Oil recovery process employing horizontal and vertical wells in a modified inverted 5-spot pattern

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113309505A (en) * 2020-02-26 2021-08-27 中国石油化工股份有限公司 Adjusting method for flow channel of water injection well of weathering crust karst reservoir
CN113309500A (en) * 2020-02-26 2021-08-27 中国石油化工股份有限公司 Tahe carbonate reservoir water injection well group flow channel adjusting method
CN113309505B (en) * 2020-02-26 2022-10-04 中国石油化工股份有限公司 Weathered crust karst reservoir water injection well flow passage adjusting method
CN113309500B (en) * 2020-02-26 2022-10-04 中国石油化工股份有限公司 Tahe carbonate reservoir water injection well group flow channel adjusting method
CN114592837A (en) * 2020-12-04 2022-06-07 中国石油天然气股份有限公司 The injection-production adjustment method in the high water-cut period for horizontal wells facing the injection-production well pattern
CN114592837B (en) * 2020-12-04 2024-04-30 中国石油天然气股份有限公司 Injection-production adjustment method for high water-cut period of horizontal wells facing injection-production well pattern
CN115807645A (en) * 2021-09-13 2023-03-17 中国石油天然气股份有限公司 Water plugging method for oil-water well

Also Published As

Publication number Publication date
CN1743641A (en) 2006-03-08
CN100467826C (en) 2009-03-11

Similar Documents

Publication Publication Date Title
CN102777157B (en) CO2 drive oil-gas-water separate well injecting oil reservoir mixing drive development method
CN102852496B (en) A method for producing medium-deep heavy oil reservoirs
CN103046910B (en) Water Flooding Development Method of Reservoir in Ultra-high Water Cut Period
CN104895541B (en) The method of breaking through the interlayer of oil layer in SAGD production of double horizontal well
WO2017028322A1 (en) Horizontal well staged fracturing oil production method by injection and production in same well
CN102146788A (en) Method for enhancing recovery ratio through three-dimensional streamline regulation of water drive reservoir
CN101493007B (en) Natural gas separation and waste gas geological sequestration method based on mixed fluid self-separation
CN116658137B (en) Method and system for sealing and self-flowing water injection of aquifer CO ₂ to increase yield of crude oil
CN109577942A (en) A kind of Tapping Potential Method of dominant flowing path development oil reservoir remaining oil
CN101876241A (en) Method for improving water drive recovery ratio of positive rhythm thick oil layer
WO2007006239A1 (en) An extracting remaining oil method using horizontal wells to inject profile control agent for blocking water injection channel of oil reservoir
CN107218024A (en) Adjustment method of diamond-shaped reverse nine-spot well pattern in multi-layer low-permeability sandstone reservoir during high water-cut period
CN103967458B (en) A kind of sand control section water drive method
CN106761611A (en) Double pressure break horizontal well cyclic water stimulation oil production methods of zip mode cloth seam
CN103362541B (en) Method for regionally increasing coal seam permeability in high gassy and low permeability coal seam
CN103628848B (en) Multidirectional interlayer displacement in flooding oil production method and system
CN205532554U (en) A Combination Intensification Well Pattern Structure of Inverse Seven Points and Inverse Four Points in High Water-cut Reservoirs
Fong et al. An Unexpected Benefit of Horizontal Wells on Offset Vertical Well Productivity in Vertical Miscible Floods
CN110566169A (en) well selecting and layer selecting method for return-flow measure after injecting large-dose flooding fluid into oil production well near sandstone reservoir fault
CN114622889B (en) Water injection well pattern adjustment method for thick porous carbonate reservoirs with high permeability layers and interlayer crossflow
CN104863559A (en) Method for increasing single well productivity of ultra-deep-layer low-permeability heavy oil reservoir
CN201943678U (en) Oilfield three-pipe injection device
CN113153242A (en) Gas injection oil displacement method and system
Wilson Overview of carbon dioxide injection and water-alternating-gas sensitivity
CN119491694B (en) A method for adjusting well pattern structure for chemical flooding development of conventional heavy oil reservoirs

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06761425

Country of ref document: EP

Kind code of ref document: A1