QX油田控水工艺研究
发布时间：2019-06-14 12:30
【摘要】：随着科学技术的进步,油气开发领域也有了多次技术革新。其中,水平井技术的提出和发展具有深远的意义。水平井的优缺点都十分鲜明,优点在于水平井能增加产层的泄油面积,可在较低生产压差下开发油藏,提高采油效率,增加可采储量；水平井开发的一个典型缺陷在于井身与油藏平行,使水平井很容易大量产水,水平井产水会使产油量骤减,含水急剧上升,甚至导致整个油井“水淹”。如何有效的控水成为水平井开发的关键。 Qx油田属于底水油藏,大规模采用水平井开采,采取合理有效的控水措施将直接影响油田开发效果。底水油藏水平井控水分为先期控水和后期控水,先期控水主要从完井方式、工作制度和油藏工程等方面出发；后期控水结合油田实际可以采取定位封隔或笼统堵水等方式。Qx油田控水需求主要体现在两个方面,一方面是油田即将布置新的水平井加密井,需要编制合理的先期控水方案；另一方面是现阶段的水平井生产井含水率高,亟待采取稳油降水的措施。本文从底水油藏出水机理出发,分析和对比了影响底水油藏底水脊进的各种因素,编制了针对QX油田的先期控水方案,并对后期控水进行重点研究。后期控水与水平井产液剖面密切相关,结合Qx油田实际,推荐连续油管产液剖面测试进行找水作业。对比各种后期控水方法,选择性化学堵水最能满足QX油田的控水需求。针对Qx油田实际,优选出KYPAM和柠檬酸铝交联体系作为堵剂,并结合正交试验确定堵剂最佳配方：KYPAM的浓度为3000mg/L, KYPAM/A1+3为8,温度为58℃、矿化度4500mg/L和pH值为7。并对选择性堵剂进行封堵性能和选择性封堵效果评价,最终选择Q33井编制合理的施工方案,为选择性堵剂的现场应用做准备。
[Abstract]:With the progress of science and technology, there have been many technological innovations in the field of oil and gas development. Among them, the proposal and development of horizontal well technology is of far-reaching significance. The advantages and disadvantages of horizontal well are very distinct, the advantage is that horizontal well can increase the oil discharge area of production layer, can develop reservoir under low production pressure difference, improve oil production efficiency and increase recoverable reserves; a typical defect of horizontal well development is that the well body is parallel to reservoir, so that horizontal well can easily produce a large amount of water, horizontal well water production will make oil production plummet, water cut will rise sharply, and even lead to "flooding" of the whole oil well. How to control water effectively becomes the key to horizontal well development. Qx oil field belongs to bottom water reservoir. Horizontal well production is adopted on a large scale. Reasonable and effective water control measures will directly affect the development effect of oil field. The horizontal well water control in the bottom water reservoir is the early water control and the later water control, the early water control mainly starts from the completion mode, the working system and the reservoir engineering, etc. The later water control combined with the oil field can adopt the positioning sealing or general water shutoff and so on. The water control demand of QX oil field is mainly reflected in two aspects. On the one hand, the oil field is about to arrange new horizontal well infill wells, so it is necessary to compile a reasonable advance water control scheme. On the other hand, the water cut of horizontal well production well is high at present, so it is urgent to take measures to stabilize oil precipitation. Based on the effluent mechanism of bottom water reservoir, this paper analyzes and compares various factors affecting the advance of bottom water ridge in bottom water reservoir, compiles an early water control scheme for QX oil field, and focuses on the study of water control in the later stage. The later water control is closely related to the liquid production profile of horizontal wells. Combined with the actual situation of Qx oil field, it is recommended to test the liquid production profile of coiled tubing for water exploration. Compared with various later water control methods, selective chemical water shutoff can best meet the water control needs of QX oil field. In view of the actual situation of Qx oil field, the crosslinked system of KYPAM and aluminum citrate was selected as blocking agent, and the optimum formula of blocking agent was determined by orthogonal test: the concentration of KYPAM was 3000 mg / L, KYPAM/A1 3 was 8, the temperature was 58 鈩，
本文编号：2499388
[Abstract]:With the progress of science and technology, there have been many technological innovations in the field of oil and gas development. Among them, the proposal and development of horizontal well technology is of far-reaching significance. The advantages and disadvantages of horizontal well are very distinct, the advantage is that horizontal well can increase the oil discharge area of production layer, can develop reservoir under low production pressure difference, improve oil production efficiency and increase recoverable reserves; a typical defect of horizontal well development is that the well body is parallel to reservoir, so that horizontal well can easily produce a large amount of water, horizontal well water production will make oil production plummet, water cut will rise sharply, and even lead to "flooding" of the whole oil well. How to control water effectively becomes the key to horizontal well development. Qx oil field belongs to bottom water reservoir. Horizontal well production is adopted on a large scale. Reasonable and effective water control measures will directly affect the development effect of oil field. The horizontal well water control in the bottom water reservoir is the early water control and the later water control, the early water control mainly starts from the completion mode, the working system and the reservoir engineering, etc. The later water control combined with the oil field can adopt the positioning sealing or general water shutoff and so on. The water control demand of QX oil field is mainly reflected in two aspects. On the one hand, the oil field is about to arrange new horizontal well infill wells, so it is necessary to compile a reasonable advance water control scheme. On the other hand, the water cut of horizontal well production well is high at present, so it is urgent to take measures to stabilize oil precipitation. Based on the effluent mechanism of bottom water reservoir, this paper analyzes and compares various factors affecting the advance of bottom water ridge in bottom water reservoir, compiles an early water control scheme for QX oil field, and focuses on the study of water control in the later stage. The later water control is closely related to the liquid production profile of horizontal wells. Combined with the actual situation of Qx oil field, it is recommended to test the liquid production profile of coiled tubing for water exploration. Compared with various later water control methods, selective chemical water shutoff can best meet the water control needs of QX oil field. In view of the actual situation of Qx oil field, the crosslinked system of KYPAM and aluminum citrate was selected as blocking agent, and the optimum formula of blocking agent was determined by orthogonal test: the concentration of KYPAM was 3000 mg / L, KYPAM/A1 3 was 8, the temperature was 58 鈩，
本文编号：2499388
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