Volume fracturing technology for tight sandstone reservoir stimulation in Liushagang Formation in Hainan
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摘要: 福山凹陷流沙港组致密砂岩是海南福山油田勘探开发的重要目标之一。受复杂构造演化影响，该区致密砂岩具有砂泥薄互层明显、低孔低渗、高温等特征，为了解决以往储层改造中经常出现的施工压力高、缝高失控、砂堵、单井产量低、压裂后产量下降快等问题。借鉴非常规体积压裂技术，采用变排量、人工隔层控缝高、暂堵转向等工艺，同时进一步优化压裂液，应用纳米增效洗油剂，在福山油田致密砂岩开展了4口井次试验。研究结果表明：非常规体积压裂技术可有效降低砂堵风险，提高福山油田致密砂岩储层的改造效果。变排量、人工隔层控缝高、暂堵转向压裂等储层改造工艺的实施，有效控制了缝高，提高了储层的压开程度。纳米增效洗油剂的应用，最大限度地降低了液体对地层和裂缝的伤害，发挥了纳米液滴渗吸洗油作用，增加了油气井的稳产期。Abstract: The tight sandstone of Liushagang Formation is one of the important targets for the exploration and development of the Fushan Oilfield in Hainan. Affected by complex structural evolution， the tight sandstone in this area has the characteristics of obvious thin interbedded sand and mud， low porosity， low permeability， and high temperature. In order to solve the problems such as high operation pressure， out-of-control fracture height， sand plugging， and low single well output and rapid output decline after fracturing in the past reservoir treatment， drawing on the unconventional reservoir volume fracturing technology， tests were conducted in four wells in the tight sandstone of Fushan Oilfield with the use of variable displacement and artificial barriers to control fracture heights， temporary plugging for fracture direction change， as well as optimization of fracturing fluids， and application of nano-synergy oil washing agents. The research results show that unconventional reservoir volume fracturing technology can effectively reduce the risk of sand plugging and improve the stimulation effect of tight sandstone reservoirs in Fushan Oilfield. The implementation of reservoir reconstruction techniques such as variable displacement， artificial barriers to control fracture heights， and temporary plugging for fracture direction change have effectively controlled fracture heights and increased the open degree of the reservoir. The application of the nano synergistic oil washing agent minimizes the damage of the liquid to the formation and fractures， exploits the effect of nano droplets to absorb and wash oil， and increases the stable production period of oil and gas wells.
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[1] Al-j Ziad， Lee R， Nihat G， et al. Evolution of tight-gas fracturing methodology in the Lower Paleozoic Sandstone Formations of Saudi Arabia［J］. Socity of Petroleum Engineers， 2011（September）：25-28.
[2] [2] Ante M.A.， Manjunath G.L.， Aminzadeh， et al. Microscale laboratory studies for determining fracture directionality in tight sandstone and shale during hydraulic fracturing［J］. Unconventional Resources Technology Conference（URTC）， 2018（July）：23-25.
[3] [3] M.Nizamuddin， AG.R. Tanweer， Andress， et al. Hydraulic fracturing of tight gas reservoir of pab Sandstone at POGC Rehman-1［J］. Society of Petroleum Engineers， 2010 （November）：10-11.
[4] [4] Ahmed F I， Nasr-El-D Hisham. Experimental investigation for the effect of the soaking process on the regain permeability after hydraulic fracturing in tight sandstone and shale formations［J］. Society of Petroleum Engineers， 2018 （November）：12-15.
[5] [5] 侯景龙，王传庆，李玉东，等.连续管密切割压裂工艺技术及其应用［J］.钻探工程，2021，48（11）：42-48.
HOU Jinglong， WANG Chuanqing， LI Yudong， et al. Intensive cut coiled tubing fracturing technology and its application［J］. Drilling Engineering， 2021，48（11）：42-48.
[6] [6] 郭兴，张建忠，孙晓，等.纤维对高导流裂缝压裂影响的实验研究［J］.钻探工程，2021，48（10）：13-20.
GUO Xing， ZHANG Jianzhong， SUN Xiao， et al. Effect of fiber on fracturing of high conductivity fractures［J］. Drilling Engineering， 2021，48（10）：13-20.
[7] [7] Dheeraj M， Rajesh K， Santanu D， et al. Exploiting the thick tight gas sandstone formation of periyakudi field of india through fracturing Stimulation-A challenging experience［J］. Society of Petroleum Engineers， 2017 （April）：4-6.
[8] [8] Arqam M， Salaheldin E， Mohammed M， et al. Effect of the type of fracturing fluid on the breakdown pressure of tight sandstone rocks［J］. Society of Petroleum Engineers， 2018 （April）：23-26.
[9] [9] 陈刚，姬伟，廖坤梦.安塞油田致密砂岩井体积压裂现场先导试验［J］.石化技术，2016，23（8）：161.CHEN Gang， JI Wei， LIAO Kunmeng. Field pilot test of volume fracturing of tight sandstone wells in Ansai Oilfield［J］， Petrochemical Industry Technology， 2016，23（8）：161.
[10] [10] 隋阳，刘建伟，郭旭东，等.体积压裂技术在红台低含油饱和度致密砂岩油藏的应用［J］.石油钻采工艺，2017，39（3）：349-355.
SUI Yang， LIU Jianwei， GUO Xudong， et al. Application of volumetric fracturing technology in Hongtai tight sandstone oil reservoir of low oil saturation［J］. Oil Drilling & Production Technology， 2017，39（3）：349-355.
[11] [11] 穆海林，刘兴浩，刘江浩，等.非常规储层体积压裂技术在致密砂岩储层改造中的应用［J］.天然气勘探与开发，2014，37（2）：56-63.
MU Hailin， LIU Xinghao， LIU Jianghao， et al. The application of unconventional reservoir volume fracturing technology in the reformation of tight sandstone reservoirs［J］. Natural Gas Exploration and Development， 2014，37（2）：56-63.
[12] [12] 李兴科.致密砂岩油藏蓄能体积压裂增产机理研究［D］.大庆：东北石油大学，2020：1-152.
LI Xingke. Study on the mechanism of energy storage volume fracturing in tight sandstone reservoirs［D］. Daqing： Northeast Petroleum University， 2020：1-152.
[13] [13] 王天驹.泾河油田致密砂岩体积压裂工艺技术研究［D］.北京：中国石油大学（北京），2016：1-79.
WANG Tianju. Research on volume fracturing technology of tight sandstone in Jinghe Oilfield［D］. Beijing： China University of Petroleum （Beijing）， 2016：1-79.
[14] [14] 李素珍，曾思云，邓校国，等.福山复杂断块油气藏大型压裂工艺技术［J］.油气井测试，2019，28（1）：60-66.
LI Suzhen， ZENG Siyun， DENG Xiaoguo， et al. Large-scale fracturing technology for Fushan complex fault block oil and gas reservoir［J］. Well Testing， 2019，28（1）：60-66.
[15] [15] 汪国庆，周承富，王玉忠，等.福山凹陷小断块油藏储层压裂技术研究与应用［J］.断块油气田，2011，18（6）：813-816.
WANG Guoqing， ZHOU Chengfu， WANG Yuzhong， et al. Research and application on fracturing of small fault block reservoir in Fushan Depression［J］. Fault-Block Oil & Gas Field， 2011，18（6）：813-816.
[16] [16] 冯丹.福山凹陷薄互层压裂改造工艺技术研究［D］.成都：西南石油大学，2016：1-84.
FENG Dan. Research on fracturing technology of thin interlayer pressure in Fushan Sag［D］. Chengdu： Southwest Petroleum University， 2016：1-84.
[17] [17] 王世磊.福山凹陷流沙港组低渗储层特征研究［D］.大庆：东北石油大学，2018：1-89.
WANG Shilei. Research on low permeability reservoir characteristics of Liushagang Formation in Fushan Sag［D］. Daqing：Northeast Petroleum University， 2018：1-89.
[18] [18] 胡越.福山油田流一段测井解释及储层非均质性研究［D］.大庆：东北石油大学，2016：1-80.
HU Yue. Well logging interpretation and reservoir heterogeneity study of Liu 1st Member in Fushan Oilfield ［D］. Daqing： Northeast Petroleum University， 2016：1-80.
[19] [19] 刘杰，孙美静，岳绍飞，等.福山凹陷花场—白莲地区流沙港组成岩作用及储层物性影响因素［J］.油气地质与采收率，2013，20（2）：21-24，29.
LIU Jie， SUN Meijing， YUE Shaofei， et al. The formation of Liushagang rock and the influencing factors of reservoir physical properties in Huachang-Bailian area， Fushan Depression［J］. Petroleum Geology and Recovery Efficiency， 2013，20（2）：21-24，29.
[20] [20] 邓校国，蒋无穷，许晓翠，等.低伤害纳米增效压裂液在福山油田的应用［J］.中国矿业，2019，28（S1）：315-321.
DENG Xiaoguo， JIANG Wuqiong， XU Xiaocui， et al. Application of low damage nano-enhanced fracturing fluid in Fushan Oilfield［J］. China Mining， 2019，28（S1）：315-321.
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