CN204266939U - A kind of water and oil control second completion pipe string combination - Google Patents
A kind of water and oil control second completion pipe string combination Download PDFInfo
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- CN204266939U CN204266939U CN201420479365.2U CN201420479365U CN204266939U CN 204266939 U CN204266939 U CN 204266939U CN 201420479365 U CN201420479365 U CN 201420479365U CN 204266939 U CN204266939 U CN 204266939U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 210000002445 nipple Anatomy 0.000 claims abstract description 35
- 239000004576 sand Substances 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims description 19
- 238000011105 stabilization Methods 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 238000003032 molecular docking Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
本实用新型公开了一种控水稳油二次完井管柱组合。所述二次完井管柱组合中设置有控水短节，控水短节设置在盲管之间,封隔器、盲管、控水短节、盲管依次连接构成组合；所述控水短节包括防砂部分和控水部分。本实用新型的完井系统施工简便、经济高效、安全可靠，可有效起到控水、稳油、防砂的作用，有效均衡产液剖面、解决目前油田水平井开发的层内水淹问题。
The utility model discloses a secondary completion pipe string combination for controlling water and stabilizing oil. The secondary completion string combination is provided with a water control sub, and the water control sub is arranged between the blind pipes, and the packer, the dead pipe, the water control sub, and the dead pipes are sequentially connected to form a combination; the control The water nipple includes sand control part and water control part. The completion system of the utility model is simple in construction, economical and efficient, safe and reliable, can effectively control water, stabilize oil, and prevent sand, effectively balance the liquid production profile, and solve the problem of intralayer water flooding in the development of horizontal wells in oilfields.
Description
技术领域 technical field
本实用新型涉及钻井中的完井领域，进一步地说，是涉及一种控水稳油二次完井管柱组合。 The utility model relates to the well completion field in well drilling, and furthermore, relates to a secondary well completion pipe string combination for controlling water and stabilizing oil.
背景技术 Background technique
目前，国内很多油田已进入开发中后期,随着水平井开发时间的延长，边、底水问题已经越来越成为一项抑制油气井产量的重要影响因素，水淹问题日显突出。 At present, many domestic oil fields have entered the middle and late stages of development. With the extension of the development time of horizontal wells, the problem of edge and bottom water has increasingly become an important factor that inhibits the production of oil and gas wells, and the problem of water flooding has become increasingly prominent.
现有水平井二次控水技术普遍采用先找水再堵水的方式，即在生产状态下通过电缆下入测量仪，测量各层位出水情况，再针对出水层段进行机械卡封或堵剂封堵方法来降低水平油井含水。找水、机械卡封或堵剂封堵方法施工工艺复杂、工序多、作业难度大，多道工序施工，技术要求高，往往造成返工，二次作业处理等，施工风险大，投入大，有效率低，不能实现经济有效或经济效益差。其主要原因一是找水技术不能完全真实反映出水层段，难以确认油水界面，也不能反映非出水段是否具有出油潜力；二是机械卡封或堵剂封堵作用半径小，层内水会很快形成绕流，使卡或堵措施失效；三是对近井地带储层造成伤害，会导致储层油相渗透率降低 Existing horizontal well secondary water control technology generally adopts the method of finding water first and then blocking water, that is, under the production state, the measuring instrument is run through the cable to measure the water outlet of each layer, and then mechanically seal or block the water outlet section. Agent plugging method to reduce water cut in horizontal oil wells. Water finding, mechanical sealing or plugging agent plugging methods have complex construction techniques, many procedures, and difficult operations. Multi-process construction requires high technical requirements, often resulting in rework, secondary operations, etc. The construction risk is high, and the investment is large. The efficiency is low, and the economic efficiency cannot be realized or the economic benefit is poor. The main reason is that the water-seeking technology cannot fully reflect the water zone, and it is difficult to confirm the oil-water interface, nor can it reflect whether the non-water zone has oil production potential; It will quickly form a bypass flow, making the stuck or plugging measures ineffective; the third is to cause damage to the reservoir near the wellbore, which will lead to a decrease in the permeability of the oil phase of the reservoir
实用新型内容 Utility model content
为解决现有技术中出现的问题，本实用新型提供了一种控水稳油二次完井系统。根本上克服现有技术的缺陷，有效均衡产液剖面、解决目前油田水平井开发的层内水淹问题，提高水平井开采效果及油田整体开发效益。 In order to solve the problems in the prior art, the utility model provides a secondary well completion system for controlling water and stabilizing oil. Fundamentally overcome the defects of the existing technology, effectively balance the liquid production profile, solve the problem of water flooding in the current oilfield horizontal well development, improve the production effect of the horizontal well and the overall development benefit of the oilfield.
本实用新型的目的是提供一种控水稳油二次完井管柱组合。 The purpose of the utility model is to provide a secondary completion pipe string combination for water control and oil stabilization.
所述二次完井管柱组合中设置有控水短节， The secondary completion string assembly is provided with a water control nipple,
控水短节设置在盲管之间,封隔器、盲管、控水短节、盲管依次连接构成组合； The water control nipple is arranged between the blind pipes, and the packer, blind pipe, water control nipple and blind pipe are connected in sequence to form a combination;
所述控水短节包括防砂部分和控水部分； The water control nipple includes a sand control part and a water control part;
所述防砂部分包括上接头，中心管，筛网组合，对接插头； The sand control part includes an upper joint, a center pipe, a screen combination, and a butt plug;
中心管外设置有轴向和径向均布的两层筋条支撑筛网，形成流体流向控水部分的通道；中心管两端分别连接上接头和对接插头，对接插头能够实现防砂部分与控水部分在油田现场的快速安装及更换； The center pipe is equipped with two layers of ribs that are evenly distributed in the axial and radial directions to support the screen, forming a channel for the fluid to flow to the water control part; the two ends of the center pipe are respectively connected to the upper joint and the docking plug. Rapid installation and replacement of the water part at the oilfield site;
所述控水部分包括外套，基管，节流件； The water control part includes a jacket, a base pipe, and a throttling piece;
节流件设置在基管外，外套套在节流件及基管外； The throttling piece is arranged outside the base pipe, and the jacket is placed outside the throttling piece and the base pipe;
外套位于装置的最外侧，起到保护内部结构的作用，基管沿流体流入方向的前端设有导流槽道及凸起，在基管的中部设有汇入槽，在汇入槽的中间设有嵌入槽，节流件设置在嵌入槽内； The jacket is located on the outermost side of the device, which protects the internal structure. The front end of the base pipe along the direction of fluid inflow is provided with diversion channels and protrusions, and an inlet groove is provided in the middle of the base pipe. An embedding groove is provided, and the throttling part is arranged in the embedding groove;
节流件包括流入通道、旋流盘及节流喷嘴； The throttling parts include inflow channels, swirl discs and throttling nozzles;
防砂部分和控水部分通过对接插头连接。 The sand control part and the water control part are connected by a butt plug.
其中， in,
所述控水短节的数量为1-4个。 The number of the water control short joints is 1-4.
汇入槽和嵌入槽围绕基管进行设置，一个基管上设置4个汇入槽和嵌入槽。 The inlet grooves and the embedding grooves are arranged around the base pipe, and four inlet grooves and the embedding grooves are arranged on one base pipe.
二次完井管柱组合还包括扶正器，扶正器套在盲管或控水短节外。 The secondary completion string combination also includes a centralizer, and the centralizer is sleeved outside the blind pipe or the water control nipple.
控水短节的长度≤5m；控水短节防砂部分的长度≤4m。 The length of the water control nipple is ≤5m; the length of the sand control part of the water control nipple is ≤4m.
本实用新型具体技术方案如下： The concrete technical scheme of the utility model is as follows:
完井管串上设置有控水短节，控水短接设置在置在盲管之间,根据所按装位置由封隔器所封隔的储层段内流量的大小,设置控水短节1-4个。 The completion pipe string is provided with a water control nipple, and the water control nipple is set between the blind pipes. According to the flow rate in the reservoir section sealed by the packer at the installed position, the water control nipple is set. Sections 1-4.
一个控水短节的长度≤5m，一般按放在一段盲管的最末端，控水短节之后一般还有一段盲管，盲管之后是封隔器。将两个封隔器之间的部分称为一个 封隔段，每个封隔段长度≥50m，根据每个封隔段内储层产液量的大小确定按放的控水短节的数量，一般不少于每段1个，每个控水短节均匀的被按放在一段之内的盲管中间，与盲管交替按放。根据国内的水平井的产量，在每段二次完井管柱中按放控水短节1-4个。 A water control nipple with a length of ≤5m is usually placed at the end of a dead leg. After the water control nipple, there is usually a blind leg, and the dead leg is followed by a packer. The part between the two packers is called an isolation section, and the length of each isolation section is ≥50m, and the number of water control joints to be released is determined according to the fluid production rate of the reservoir in each isolation section , generally not less than 1 per section, and each water control nipple is evenly placed in the middle of the blind pipe within a section, and alternately pressed and placed with the dead pipe. According to the production of domestic horizontal wells, there are 1-4 water control nipples in each secondary completion string.
所述控水短节包括防砂部分和控水部分； The water control nipple includes a sand control part and a water control part;
防砂部分包括上接头，中心管，筛网组合，对接插头；其中中心管加工有轴向和径向均布的两层筋条支撑筛网，形成流体流向控水部分的通道；控水部分包括外套，基管，节流件；基管是整个流入控制器的重要组成部分，其前端设有导流槽道及凸起，导流槽道起到将进入流入控制器中的流体导入的目的，凸起主要起到支撑外套保证整个控水装置强度的作用，在基管的中端设有汇入槽，在汇入槽的中间设有嵌入槽，嵌入槽主要用来按放节流控制件，汇入槽和嵌入槽围绕基管进行布置，一个基管上布置4个。节流件是整个装置控水部分的核心部件，其上至少包含一个流入通道、一个旋流盘及一个节流喷嘴，其工作原理是根据油与水的密度和粘度的差异从而造成流动的差异，由于流动的差异造成油和水在旋流过程中压力能与动能之间的转化过程中能量损失不同，从而实现高节流压降及油和水的压降的差异，达到遇水产生高的节流阻力、遇油产生低的节流阻力，自适应调流控水的目的。整个控水短节不含活动部件。 The sand control part includes an upper joint, a central pipe, a screen combination, and a docking plug; the central pipe is processed with two layers of ribs that are evenly distributed in the axial and radial directions to support the screen, forming a channel for the fluid to flow to the water control part; the water control part includes Jacket, base pipe, throttling parts; the base pipe is an important part of the entire inflow controller, and its front end is provided with diversion channels and protrusions, and the diversion channels serve the purpose of introducing the fluid entering the inflow controller , the protrusion mainly plays the role of supporting the jacket to ensure the strength of the entire water control device. There is an inlet groove at the middle end of the base pipe, and an embedded groove is provided in the middle of the inlet groove. The embedded groove is mainly used to press and release the throttling control Components, inlet grooves and embedding grooves are arranged around the base pipe, and 4 pieces are arranged on one base pipe. The throttling part is the core part of the water control part of the whole device, which contains at least one inflow channel, a swirl disc and a throttling nozzle. Its working principle is based on the difference in density and viscosity between oil and water to cause flow differences , due to the difference in flow, the energy loss of oil and water in the conversion process between pressure energy and kinetic energy in the swirl process is different, so as to achieve a high throttling pressure drop and a difference in pressure drop between oil and water, so as to achieve high water generation. Low throttling resistance and low throttling resistance when encountering oil, self-adaptive for the purpose of regulating flow and controlling water. The entire water control nipple contains no moving parts.
防砂部分与控水部分通过对接插头、中心管、外套、基管连接在一起。 The sand control part and the water control part are connected together through a butt plug, a central pipe, a jacket and a base pipe.
本实用新型涉及的控水稳油二次完井管柱的技术方案是:在水平井段由不同长度的盲管和控水短节间隔排列,配合管外封隔器封隔完井管串与井眼环空,综合利用盲管、控水短节和管外封隔器的组合达到对水平井的分段和延缓底水锥进的效果，实现方法是将管外封隔器直接连接到盲管上(也可将管外封隔器直接套在盲管上)，在将盲管和控水短节按照交替组合的结构组合后直接下入井内；或是用刮管器通井并洗井，再下入完井管柱。封隔器可采用遇油遇水膨胀式封隔器、也可采用投球打开式封隔器。如采用遇油遇水膨胀式封隔器则需要在完井管柱下入后循环入轻质柴油或是清水对封隔器进行浸泡，促进橡胶膨胀， 浸泡时间一般在72小时以上。如采用投球打开式封隔器，需要在下入完井管柱后，憋压至10MPa坐封封隔器，封隔器坐封后，憋压至20MPa憋脱球座。 The technical scheme of the secondary completion string for controlling water and stabilizing oil involved in the utility model is as follows: blind pipes of different lengths and water control nipples are arranged at intervals in the horizontal well section, and the completion string is sealed with an external packer With the borehole annulus, the combination of blind pipe, water control nipple and external packer can be used comprehensively to achieve the effect of segmenting horizontal wells and delaying bottom water coning. The method is to directly connect the external packer to the dead-leg (or put the outer packer directly on the dead-leg), run the dead-leg and the water control nipple into the well directly after combining the alternately combined structure; or use a scraper to open the well And wash the well, and then run into the completion string. The packer can be oil-water-swellable packer or ball-opening packer. If the oil and water swellable packer is used, it is necessary to circulate light diesel oil or clean water to soak the packer after the completion string is run in to promote rubber expansion. The soaking time is generally more than 72 hours. If a drop-ball open packer is used, it is necessary to suppress the pressure to 10MPa to set the packer after running the completion string, and to suppress the pressure to 20MPa to release the ball seat after the packer is set.
盲管在这里指的是与外界没有其他的连通通道而内部有流动通道的管子,使用中油管可用来当作盲管,封隔器采用遇油遇水自膨胀封隔器或投球打开式封隔器，用于封隔储层，将水平井水平段封隔成多段、防止水窜。控水短节采用主动型的自适应控水短节，无需人工干预和电/液驱动即可根据进入短节油量和水量的变化而自行调节进入产出中心管的产液量，平衡产液剖面。扶正器采用弹簧扶正器或其它任何形式的扶正器，避开封隔器等间距置于整个完井系统，目的是使管柱居中。 A dead leg here refers to a pipe that has no other communication channel with the outside world but has a flow channel inside. The oil pipe can be used as a dead leg in use. The spacer is used to isolate the reservoir, and isolate the horizontal section of the horizontal well into multiple sections to prevent water channeling. The water control nipple adopts the active self-adaptive water control nipple, which can automatically adjust the liquid production rate entering the output center pipe according to the change of the oil and water volume entering the nipple without manual intervention and electric/hydraulic drive, so as to balance the production liquid profile. The centralizers are spring centralizers or any other forms of centralizers, which are placed in the entire completion system at equal intervals away from the packers, in order to center the pipe string.
在非产层的水平井段，下入盲管及封隔器组合，封隔非产层段，保持非产层段的地层压力，以补偿生产层的压力损失。对于生产层，下入封隔器及自适应控水短节组合，它对于生产层中的产油层几乎不产生或只产生很小的阻力，而对于生产层中的水淹层则产生较大的阻力。本完井管柱可一趟式下入，不需要特殊作业，适用于裸眼井、套管井和前期管外分段的筛管井等。 In the horizontal well section of the non-productive zone, a combination of dead pipe and packer is run to seal the non-productive zone and maintain the formation pressure of the non-productive zone to compensate for the pressure loss of the productive zone. For the production layer, the combination of running the packer and the self-adaptive water control nipple will produce little or no resistance to the oil-producing layer in the production layer, but it will generate a large resistance to the water-flooded layer in the production layer. resistance. The completion pipe string can be run in one trip without special operations, and is suitable for open hole wells, cased wells and screen wells that are segmented outside the pipe in the early stage.
本实用新型的完井系统的关键部分为可主动控水的自适应控水短节，包括防砂部分和控水部分。防砂部分主要包括上接头，中心管，筛网组合，对接插头；其中中心管加工有轴向和径向均布的两层筋条支撑筛网，形成流体流向控水部分的通道。控水部分包括外套，基管，节流件；防砂部分与控水部分通过对接插头、中心管、外套、基管连接在一起，即留有流体通道，同时又具有密封可靠、方便现场更换的特点。控水部分的核心构件为节流件，可根据流体性质的不同自行改变对流体的阻力的大小。控水短节中流体只能通过节流件进入生产管柱，流体流动路径为：地层流体经筛网进入后首先流经筛网与中心管的环空，然后流经防砂部分和控水部分的连接接头，进入控水部分的节流件，经节流件的调流最后进入生产管柱中，达到控水稳油目的。 The key part of the well completion system of the utility model is the self-adaptive water control nipple that can actively control water, including a sand control part and a water control part. The sand control part mainly includes the upper joint, the central pipe, the screen combination, and the docking plug; the central pipe is processed with two layers of ribs uniformly distributed in the axial and radial directions to support the screen, forming a channel for the fluid to flow to the water control part. The water control part includes the jacket, base pipe, and throttling parts; the sand control part and the water control part are connected together through the docking plug, the central pipe, the jacket, and the base pipe, that is, there is a fluid channel, and at the same time, it has a reliable seal and is convenient for on-site replacement. features. The core component of the water control part is the throttling piece, which can change the resistance to the fluid according to the different properties of the fluid. The fluid in the water control nipple can only enter the production string through the throttling piece. The fluid flow path is: after the formation fluid enters through the screen, it first flows through the annulus between the screen and the center pipe, and then flows through the sand control part and the water control part. The connection joint of the pipe enters the throttling part of the water control part, and the flow is adjusted by the throttling part and finally enters the production string to achieve the purpose of water control and oil stabilization.
本实用新型的效果： Effect of the present utility model:
(1)本实用新型所涉及的自适应控水筛管短节，无须人工干预和提供电/ 液动力，即可自主改变结构内部的流动方式，“节流”低黏度流体、“开源”高黏度流体，从而均衡产液剖面。 (1) The self-adaptive water control screen nipple involved in the utility model can independently change the flow mode inside the structure without manual intervention and providing electric/hydraulic power, "throttle" low-viscosity fluid, "open source" high Viscosity fluid, so as to balance the production profile.
(2)本实用新型所涉及的完井管柱便于下入和起出，一次管柱即可实现控制产水段的产出，提升产油段产量的目的； (2) The completion pipe string involved in the utility model is convenient to run in and out, and the pipe string can realize the purpose of controlling the output of the water-producing section and increasing the output of the oil-producing section;
(3)本实用新型所涉及的完井系统在水平产液段全线布设控水筛管，不用找水，任何位置出水都自动控水，有效期长，并且不用因为新增出水点，而重复多次堵水。 (3) The well completion system involved in the utility model is equipped with water control screens in the horizontal liquid production section, no need to find water, and the water is automatically controlled at any position, the validity period is long, and there is no need to repeat many times because of newly added water outlet points water blockage.
(4)本实用新型所提出的二次完井系统即可用于大泵提液井二次完井，也可用于注水驱油提液井二次完井。 (4) The secondary completion system proposed by the utility model can be used for the secondary completion of the large pump liquid extraction well, and can also be used for the secondary completion of the water flooding oil extraction well.
附图说明 Description of drawings
图1为控水稳油二次完井管柱组合示意图 Fig. 1 is a schematic diagram of the secondary completion string combination for water control and oil stabilization
图2为控水短节及流体流动示意图 Figure 2 is a schematic diagram of the water control nipple and fluid flow
附图标记说明： Explanation of reference signs:
1-生产管柱； 2-封隔器； 3-控水短节； 4-安全接头； 1-production string; 2-packer; 3-water control nipple; 4-safety joint;
5-扶正器； 6-盲管； 7-储层； 10-防砂部分； 5-centralizer; 6-blind pipe; 7-reservoir; 10-sand control part;
11-上接头； 12-中心管； 13-筛网组合； 14-对接插头； 11-upper joint; 12-central tube; 13-screen combination; 14-butt plug;
15-控水部分； 16-外套； 17–节流件； 18-基管 15-water control part; 16-overcoat; 17-throttling piece; 18-base pipe
具体实施方式 Detailed ways
下面结合实施例，进一步说明本实用新型。 Below in conjunction with embodiment, further illustrate the utility model.
实施例 Example
如图1所示，一种控水稳油二次完井管柱组合。 As shown in Figure 1, a combination of secondary completion strings for water control and oil stabilization.
所述二次完井管柱组合中设置有控水短节3， The secondary completion string assembly is provided with a water control nipple 3,
控水短节3设置在盲管6之间,封隔器、盲管、控水短节、盲管依次连接构成组合； The water control nipple 3 is arranged between the blind pipes 6, and the packer, the dead pipe, the water control nipple, and the dead pipe are connected in sequence to form a combination;
所述控水短节3包括防砂部分10和控水部分15；如图2所示， The water control joint 3 includes a sand control part 10 and a water control part 15; as shown in Figure 2,
所述防砂部分10包括上接头11，中心管12，筛网组合13，对接插头14； The sand control part 10 includes an upper joint 11, a central pipe 12, a screen combination 13, and a butt plug 14;
中心管12外设置有轴向和径向均布的两层筋条支撑筛网，形成流体流向控水部分的通道；中心管12两端分别连接上接头11和对接插头14； The central tube 12 is provided with two layers of ribs supporting the screen in the axial and radial directions, forming a channel for the fluid to flow to the water control part; the two ends of the central tube 12 are respectively connected to the upper joint 11 and the docking plug 14;
所述控水部分15包括外套16，基管18，节流件17； The water control part 15 includes a jacket 16, a base pipe 18, and a throttling member 17;
节流件17设置在基管18外，外套16套在节流件17及基管18外； The throttling piece 17 is arranged outside the base pipe 18, and the jacket 16 is set outside the throttling piece 17 and the base pipe 18;
外套16位于装置的最外侧，起到保护内部结构的作用，基管18沿流体流入方向的前端设有导流槽道及凸起，在基管的中部设有汇入槽，在汇入槽的中间设有嵌入槽，节流件设置在嵌入槽内； The overcoat 16 is located at the outermost side of the device and plays a role in protecting the internal structure. The front end of the base pipe 18 along the fluid inflow direction is provided with diversion channels and protrusions, and the middle part of the base pipe is provided with an inlet groove. There is an embedding groove in the middle, and the throttling piece is arranged in the embedding groove;
节流件17包括流入通道、旋流盘及节流喷嘴； The throttling member 17 includes an inflow channel, a swirl disc and a throttling nozzle;
防砂部分10和控水部分15通过对接插头14连接。 The sand control part 10 and the water control part 15 are connected through a docking plug 14 .
二次完井管柱组合还包括扶正器，扶正器套在忙管或控水短节外。 The secondary completion string combination also includes a centralizer, and the centralizer is sleeved outside the busy pipe or the water control sub.
在实施例中共采用了5个封隔器将整个水平井水平段封隔为了4段，将图中从左往右分成的4段：分别称为第一段、第二段、第三段、第四段，第一段、第三段、第四段内分别按放了一个控水短节。第二段因为是非产液段因此未按装控水装置，主要起到封隔储层减少对其他储层影响的作用。盲管的数量主要跟封隔段的长度有关系，目前现场应用主要采用油管来充当盲管，一根油管的长度大概是9.5米左右，如设定第一段长约80米、第二段长约50米、第三段长约70米、第四段长约100米，那么第一段需要安装盲管7根、第二段需要盲管5根、第三段需要盲管6根、第四段需要盲管9根。平均两根盲管用一个扶正器，第一段需要安装扶正器4个，第二段需要安装扶正器3个，第三段需要安装扶正器4个，第四段需要安装扶正器5个。 In the embodiment, a total of 5 packers are used to seal the entire horizontal section of the horizontal well into 4 sections, which are divided into 4 sections from left to right in the figure: respectively called the first section, the second section, the third section, In the fourth paragraph, a water control short section is respectively placed in the first paragraph, the third paragraph, and the fourth paragraph. Because the second section is a non-liquid-producing section, no water control device is installed, which mainly plays the role of isolating the reservoir and reducing the impact on other reservoirs. The number of dead pipes is mainly related to the length of the isolation section. At present, oil pipes are mainly used as dead pipes in field applications. The length of one oil pipe is about 9.5 meters. The length of the third section is about 50 meters, the length of the third section is about 70 meters, and the length of the fourth section is about 100 meters. Then the first section needs to install 7 blind pipes, the second section needs 5 dead pipes, and the third section needs 6 dead pipes. The fourth section requires 9 blind pipes. On average, one centralizer is used for two blind pipes. The first section needs to install 4 centralizers, the second section needs to install 3 centralizers, the third section needs to install 4 centralizers, and the fourth section needs to install 5 centralizers.
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