浅海油田深部调驱技术
发布时间：2019-04-17 05:41
【摘要】：海南三块油田实现注水开发后,由于为东营组储层,含油层段长(200~300m),岩性细、单层薄,层间、平面非均质性强,突进系数6.03~16.71,变异系数1.22~2.96。纵向上高渗层吸水强,水驱动用状况好,低渗层水驱状况差,平面水线沿主流线方向推进,水驱波及小,从而导致见效快、见效井数少、含水上升快等开发矛盾。根据2010年吸水剖面统计,吸水层厚度占射开厚度的73.8%,主力吸水层厚度占射孔厚度的31.4%,而吸水量却占总吸水量的61.3%。由于吸水层位过于集中,纵向上水驱动用状况不均衡,造成油井部分小层注水突进,油井水淹快。因此,调整吸水剖面是提高注水波及体积,改善水驱效果的关键,对浅海公司实现陆滩稳产具有重要意义。针对海南3块中低渗、小孔喉的特点,研发针对性的调驱剂体系,通过室内实验评价,优选现场施工参数,并通过现场应用,达到调整水驱方向,提高水驱波及体积,抑制注入水指进,控制井组内对应油井含水上升速度。开发一种对储层伤害小,具有一定封堵能力,堵而不死,兼具驱油功能的多功能凝胶体系,并通过基本性能评价对配方进行筛选并进行物模实验,优化措施参数,建立凝胶体系性能的评价方法,同时研究较为合理的分层调驱工艺管柱与注堵调一体化工艺技术。目标:(1)开发一种适宜海南三块的多功能调堵一体化学药剂;(2)形成物模模拟实验对药剂的评价方案;(3)优化施工工艺;(4)通过现场应用,注水井达到注入量,吸水剖面测试结果反映高渗透层吸水量减少,低渗透层开始吸水或吸水量增大。
[Abstract]:After water flooding has been realized in the third block of Hainan oilfield, the reservoir of Dongying formation is long (200 m 300 m), thin lithology, thin monolayer, interlayer, strong plane heterogeneity, outburst coefficient 6.03 ~ 16.71 and coefficient of variation 1.22 ~ 2.96. The water absorption of the vertical high permeability layer is strong, the water driving condition is good, the water drive condition of the low permeability layer is poor, the plane waterline advances along the direction of the main flow line, and the water flooding spread is small, which leads to the development contradiction of quick effect, less number of effective wells and quick rise of water cut and so on. According to the statistics of water absorption profile in 2010, the thickness of water absorption layer accounts for 73.8% of the perforation thickness, the thickness of the main absorbing layer is 31.4% of the perforation thickness, and the water absorption rate is 61.3% of the total water absorption. Because the water absorption level is too concentrated and the vertical water driving condition is not balanced, some small layers of oil well water injection burst into the oil well, and the water flooding of the oil well is fast. Therefore, adjusting the water absorption profile is the key to improve the sweep volume of water injection and improve the effect of water flooding, and it is of great significance for the shallow water company to realize the stable production of the land flat. In view of the characteristics of medium-low permeability and small pore throat in Hainan 3 block, a targeted flooding agent system is developed. The field construction parameters are optimized through indoor experiment evaluation and field application to adjust the direction of water drive and improve the sweep volume of water drive. The injection water is restrained and the water-cut rising rate of the corresponding well is controlled in the well group. A kind of multifunctional gel system with little damage to reservoir, certain plugging ability, plugging without death and oil displacement function was developed. The formula was screened through basic performance evaluation and the physical model experiment was carried out to optimize the measure parameters. The evaluation method of gel system performance was established, and the reasonable technology of pipe string and injection-plugging control was studied. Objective: (1) to develop a kind of multi-function, adjusting and plugging integrated medicament suitable for Hainan three blocks, (2) to form the evaluation scheme of the material model simulation experiment, (3) to optimize the construction technology, and (3) to optimize the construction technology. (4) through the field application, the injection capacity of the injection well is reached, and the water absorption profile test results show that the water absorption of the high permeability layer decreases, and the low permeability layer begins to absorb water or increase the water absorption capacity.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE53
本文编号：2459137
[Abstract]:After water flooding has been realized in the third block of Hainan oilfield, the reservoir of Dongying formation is long (200 m 300 m), thin lithology, thin monolayer, interlayer, strong plane heterogeneity, outburst coefficient 6.03 ~ 16.71 and coefficient of variation 1.22 ~ 2.96. The water absorption of the vertical high permeability layer is strong, the water driving condition is good, the water drive condition of the low permeability layer is poor, the plane waterline advances along the direction of the main flow line, and the water flooding spread is small, which leads to the development contradiction of quick effect, less number of effective wells and quick rise of water cut and so on. According to the statistics of water absorption profile in 2010, the thickness of water absorption layer accounts for 73.8% of the perforation thickness, the thickness of the main absorbing layer is 31.4% of the perforation thickness, and the water absorption rate is 61.3% of the total water absorption. Because the water absorption level is too concentrated and the vertical water driving condition is not balanced, some small layers of oil well water injection burst into the oil well, and the water flooding of the oil well is fast. Therefore, adjusting the water absorption profile is the key to improve the sweep volume of water injection and improve the effect of water flooding, and it is of great significance for the shallow water company to realize the stable production of the land flat. In view of the characteristics of medium-low permeability and small pore throat in Hainan 3 block, a targeted flooding agent system is developed. The field construction parameters are optimized through indoor experiment evaluation and field application to adjust the direction of water drive and improve the sweep volume of water drive. The injection water is restrained and the water-cut rising rate of the corresponding well is controlled in the well group. A kind of multifunctional gel system with little damage to reservoir, certain plugging ability, plugging without death and oil displacement function was developed. The formula was screened through basic performance evaluation and the physical model experiment was carried out to optimize the measure parameters. The evaluation method of gel system performance was established, and the reasonable technology of pipe string and injection-plugging control was studied. Objective: (1) to develop a kind of multi-function, adjusting and plugging integrated medicament suitable for Hainan three blocks, (2) to form the evaluation scheme of the material model simulation experiment, (3) to optimize the construction technology, and (3) to optimize the construction technology. (4) through the field application, the injection capacity of the injection well is reached, and the water absorption profile test results show that the water absorption of the high permeability layer decreases, and the low permeability layer begins to absorb water or increase the water absorption capacity.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE53
【参考文献】
相关期刊论文 前1条
1 张祥云,吴凤芝,宋文玲;矿化度对交联聚合物成胶的影响[J];大庆石油学院学报;1990年02期
，本文编号：2459137
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