These characteristics made oil-base cement slurry have a wide application prospect in oil-stabilization and water-control, oil reservoir protection, EoR and so on. 针对水基水泥浆在石油钻采应用中存在的不足,介绍了油基水泥浆的组成及性能。
During the past three years in Tahe Oilfield, cement squeeze technology for water plugging has been taken for37 wells in the fractured-vuggy carbonate reservoir. 该工艺实施的成功与否,主要取决于储集体类型、堵水时机、水泥隔层的延伸范围及厚度。
Indoor and outdoor experiments on the characteristics of the cement added fine sands for Shifosi Reservoir were carried out. 采用室内试验和现场原型试验,对辽河石佛寺水库库区内掺入水泥后粉细砂的特性进行了研究。
In the course of cementation, slurry filtrate and cement fine grains will greatly enter into hydrocarbon reservoir, then block oil and gas channels and directly influence the effect of oil and gas production if the property of slurry can't be adjusted and controlled. 固井过程中,若不对水泥浆性能进行调整和控制,水泥浆滤液与水泥细小颗粒会大量进入油气层,堵塞油气通道,影响油气开采效果。
The first treatment of cement grouting followed the determined results met with success by a 60% reduction of reservoir leakage. 依据测量结果,大坝首次灌浆处理获得成功,水库的渗漏水量比灌浆前减少60%。
GJ-1 cement slurry system for gas reservoir protection and its laboratory evaluation GJ-1保护气层防气窜水泥浆体系研究
Application of Selective Cement Completion Tech in Buried Hill Reservoir 潜山油藏选择性注水泥完井工艺技术研究
The solution of salt existing as the cement results in the escape and migration of particles, which is the immediate cause leading to the change of reservoir parameters. 盐的溶解是储层参数变化的根本原因;作为胶结物形式存在的可溶性盐的溶解,造成了岩石颗粒的脱落和运移,它是储层参数变化的直接原因。
Research of the cement slurry system for fracture-pore type reservoir protection 裂缝-孔隙型储层保护水泥浆体系研究
The Cement Grouting applied in Seepage Control and Stabilization of Cement-rubble Stone dam in Jinjiang Reservoir 水泥灌浆在锦江水库浆砌石坝防渗加固中的应用
Application of soil cement paddling process in treatment of Xijiao reservoir pervious layer 水泥土搅拌法在西郊水库渗水层处理中的应用
The incompatibilities among drilling filtrate, cement slurry filtrate and basic completion fluid filtrate in Suizhong 36-1 Oilfield result damage to oil-gas reservoir, and implicit acid completion fluid is developed. 在绥中36-1油田,钻井液滤液、水泥浆滤液和碱性完井液之间配伍性差,相互接触时产生大量沉淀,导致岩心渗透率下降,损害储层。
The tech realizes cement at arbitrary depth and not only guarantee the cement quality, but also avoids damaging oil layer of mud fluid, that achieves the unification of cement and oil layer protection to satisfy the need of fine and high efficiency development of buried hill reservoir. 该技术实现了任意井段选择性注水泥固井,既保证固井质量,又避免水泥浆污染油层,实现了注水泥固井与油层保护的统一,满足了潜山油藏精细高效开发的需要。
Corrosion effect of the acidulous water released from conversion process of clay minerals on clastic particles and cement and later injection of hydrocarbon have improvement and storage effects on reservoir primary pores to certain degree. 粘土矿物在转化过程中释放的酸性水对碎屑颗粒和胶结物的溶蚀作用及烃类的后期注入在一定程度上起到了对储层原生孔隙的改善和保存作用。
A low cost and high performance cement slurry system for developing the undeveloped reservoir is presented in this paper. 在保障性能基础上各类水泥浆体系的降低成本问题。介绍了开发未动用石油储藏的低成本高性能水泥浆体系。
The purpose of this paper is in order to study the possibility and safety when the cement and tailings sand are used to construct tailings dam. The tailings sand reservoir has a high moisture content and lower density and it has a soft plastic state. 为了研究水泥尾矿砂混合料直接修建尾矿坝的可能性和安全性,针对尾矿库现场尾矿砂含水量大、密度小处于软塑状态的特点。
In order to solve the problem of the brittle fracture of cement sheath caused by perforation and other production-enhancing measures after the well cementing of thin oil reservoir wells, small-borehole wells and laterally-drilling wells, a fiber toughness-enhancing material for well-cementing cement is developed. 为了解决国内油田薄油层井、小间隙井和侧钻井固井后射孔及后续增产措施造成的水泥环脆裂(即二次窜流)问题,研制开发了油井水泥纤维增韧材料(增韧剂F17F)。
Reverse cement squeezing technique for liner cementing in buried hill reservoir 潜山井尾管反挤水泥固井工艺
Foamed cement slurry cementing technology used in plugging reservoir 用于封固气层的泡沫水泥浆固井技术
Through the testing of seepage coefficient and compressive strength for the surrounding well of cement soil mixing piles, it is indicated that it is reasonable and obvious in effect to use cement soil mixing piles for seepage control of the foundation of reservoir dam. 通过水泥土搅拌桩围井施工及对围井墙体取样进行渗透系数、抗压强度等物理力学性能指标的测试,实验结果表明:采用水泥土搅拌桩作为水库坝基防渗,方案合理,效果明显。
The research of quartz cement is significant for the timing of paleotemperature, heterogeneity of reservoir, physical property of reservoir and the timing of oil immersion, and so on. 石英胶结物的研究对古温度的定时、了解储层非均质性的成因及储层物性有着重要的意义。
This paper presents a reverse cement squeezing technique which sets the liner in the non major buried hill reservoir and then cements the liner utilizing the lost circulation in buried hill interval. 文中介绍了将尾管坐入潜山非主力油层,再利用潜山地层漏失进行反挤水泥固井。
Research and practice of the cement slurry for reservoir protection 保护油气层水泥浆的研究与实践
By using energy-gathered shooting technology, such as perforating charge, the casing and cement sheath are perforated, so as to form a flow channel from reservoir to wellbore for oil and gas. 射孔完井通常采用射孔弹等以聚能爆破的方式射穿套管和水泥环,并射入地层一定深度,从而沟通油气藏和井眼,形成油气流到地面的通道。
Because of the addition of the alkaline agent, it is serious harm to the reservoir rocks skeleton and cement, so it is bound to cause harm to reservoir. 而碱剂的加入,对油层岩石骨架和胶结物有严重的伤害,因此必然对油层造成伤害。
Sedimentary facies, clastic and cement type and content, diagenesis, microstructure and micro cracks are the main factors affecting reservoir physical properties. 沉积相、碎屑和胶结物类型及含量、成岩作用、微观结构、微裂缝等是影响储层物性的主要因素。
Cementation is the other important factor that caused the loss part of the primary porosities. In the cements, carbonate cement and quartz overgrowths are the major factor reduced the reservoir quality. 胶结作用是储层物性变差的另一个重要因素。在胶结物中,碳酸盐和次生石英是使储层物性变差的主要胶结物。
Among them, type of pore-lining chlorite cementation and dissolution of unstable components was the best reservoir properties, pore-lining chlorite cement type and development phase followed by the residual porosity, weak compaction calcite cement of the worst-phase reservoir. 其中以孔隙衬里式绿泥石胶结及不稳定组分溶蚀相储层物性最好,孔隙衬里式绿泥石胶结及残余孔隙发育相次之,弱压实方解石胶结相储层物性最差。