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producing pressure drop
相关语句
  生产压差
    It is considered that the water of gas wells in large gas bearing areas would not influence gas producing; in marginal positions of water enriched areas,it is necessary to control producing pressure drop(<3 MPa)or to dewater so as to restart production.
    大面积气区中气井出水 ,并不影响气的产出 ,在相对富水区边缘 ,由于出水采气导致水体与井底压差增大 ,可能造成气井很快出水且水量急增 ,但可通过控制生产压差 (<3MPa)或采用排水恢复产气。
短句来源
    Because of strong stress sensitivity,when formation pressure increases to 48.3 MPa,porosity loss is 15%~50%,permeability loss is up to 87%~94% and the permeability is difficult to be restored after confined pressure elimination. Therefore,in the process of gas reservoir development,the producing pressure drop should be strictly controlled to avoid the premature closing of the microfissures and small throats in reservoir owing to rapid decrease in formation pressure.
    应力敏感性强 ,当压力升至 48.3MPa时 ,孔隙度损失为 15 %~ 5 0 % ,渗透率损失高达 87%~ 94% ,且围压撤消后渗透率很难恢复 ,因此气藏开发过程中 ,应注意生产压差的控制 ,避免因地层压力下降太快而导致微裂缝和小喉道的过早关闭
短句来源
  生产压差
    It is considered that the water of gas wells in large gas bearing areas would not influence gas producing; in marginal positions of water enriched areas,it is necessary to control producing pressure drop(<3 MPa)or to dewater so as to restart production.
    大面积气区中气井出水 ,并不影响气的产出 ,在相对富水区边缘 ,由于出水采气导致水体与井底压差增大 ,可能造成气井很快出水且水量急增 ,但可通过控制生产压差 (<3MPa)或采用排水恢复产气。
短句来源
    Because of strong stress sensitivity,when formation pressure increases to 48.3 MPa,porosity loss is 15%~50%,permeability loss is up to 87%~94% and the permeability is difficult to be restored after confined pressure elimination. Therefore,in the process of gas reservoir development,the producing pressure drop should be strictly controlled to avoid the premature closing of the microfissures and small throats in reservoir owing to rapid decrease in formation pressure.
    应力敏感性强 ,当压力升至 48.3MPa时 ,孔隙度损失为 15 %~ 5 0 % ,渗透率损失高达 87%~ 94% ,且围压撤消后渗透率很难恢复 ,因此气藏开发过程中 ,应注意生产压差的控制 ,避免因地层压力下降太快而导致微裂缝和小喉道的过早关闭
短句来源
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The water out reservoirs of Changqing Gasfields are mainly distributed in Ma 5 1 submember.The reservoirs could be divided into water producing,water gas producing and gas producing types.The formation water of the reservoirs appeared to be lenticular discontinuous water bodies,but actually there is no boundary between gas and water,no fringe water and bottom water.20 water enriched areas could be found through lateral formation water tracing by using well log and seismic data.It is considered that the water...

The water out reservoirs of Changqing Gasfields are mainly distributed in Ma 5 1 submember.The reservoirs could be divided into water producing,water gas producing and gas producing types.The formation water of the reservoirs appeared to be lenticular discontinuous water bodies,but actually there is no boundary between gas and water,no fringe water and bottom water.20 water enriched areas could be found through lateral formation water tracing by using well log and seismic data.It is considered that the water of gas wells in large gas bearing areas would not influence gas producing;in marginal positions of water enriched areas,it is necessary to control producing pressure drop(<3 MPa)or to dewater so as to restart production.

长庆气田的出水层主要分布于马五1段 ,根据测井检测数据 ,可分为产水不产气、气水同产及产气不 (少 )产水型。表面上看 ,长庆气田马五1储层的地层水呈块状或透镜状分布 ,无连片水体。实际上 ,该区地层水并非完全独立 ,气藏中不存在“边水”或“底水” ,找不到绝对的气水边界 ,只存在一些相对富集的区域 ,即相对富水区。通过利用地震、测井资料对地层水横向追踪 ,发现该区存在约 2 0个相对富水区。大面积气区中气井出水 ,并不影响气的产出 ,在相对富水区边缘 ,由于出水采气导致水体与井底压差增大 ,可能造成气井很快出水且水量急增 ,但可通过控制生产压差 (<3MPa)或采用排水恢复产气。

The matrix petrophysical property of Xu 2 gas reservoir in Pingluoba Field is bad but its fractures are developed,so it is a fracture porosity tight sand reservoir,being of an organically matching of secondary solution pores with developed fractures.Through studying the content,type and occurrence of clay minerals in sandstone,it is shown that the watersensitive and water locking effects are the major factors of causing potential reservoir damage.The type and degree of reservoir sensitive damage and its relevant...

The matrix petrophysical property of Xu 2 gas reservoir in Pingluoba Field is bad but its fractures are developed,so it is a fracture porosity tight sand reservoir,being of an organically matching of secondary solution pores with developed fractures.Through studying the content,type and occurrence of clay minerals in sandstone,it is shown that the watersensitive and water locking effects are the major factors of causing potential reservoir damage.The type and degree of reservoir sensitive damage and its relevant games and suggests were researched by use of many core experimental methods.It is considered that in reservoir,the gas logging velocity sensitivity is weak~medium weak,the degree of its damage being 16.2%~39.9%;and the water sensitive and water locking effects are strong,the degree of their damage being 80%~96%,therefore the underbalance drilling technique should be adopted and the entrance of the water,especially the low mineralized water (< 2 500 mg /L) used for various operations,into formation should be strictly controlled.Because of strong stress sensitivity,when formation pressure increases to 48.3 MPa,porosity loss is 15%~50%,permeability loss is up to 87%~94% and the permeability is difficult to be restored after confined pressure elimination.Therefore,in the process of gas reservoir development,the producing pressure drop should be strictly controlled to avoid the premature closing of the microfissures and small throats in reservoir owing to rapid decrease in formation pressure.

平落坝须二段气藏储层基质物性差、裂缝发育 ,系次生溶蚀孔和发育的裂缝有机配置的裂缝—孔隙型致密砂岩体储层。文章从砂岩粘土矿物含量、类型及赋存方式 ,阐明了水敏、水锁效应是储层潜在伤害的主导因素。以多项岩心实验方法 ,研究了储层敏感性伤害类型、程度及相应的对策、建议 ,认为 :储层气测速敏属弱—弱偏中 ,其伤害程度为 16 .2 %~ 39.9% ;水敏、水锁效应强 ,伤害程度达 80 %~ 96 % ,应采用欠平衡钻井技术及严格控制各种作业过程中水、特别是低矿化度水 (小于 2 5 0 0 0mg/L)进入地层 ;应力敏感性强 ,当压力升至 48.3MPa时 ,孔隙度损失为 15 %~ 5 0 % ,渗透率损失高达 87%~ 94% ,且围压撤消后渗透率很难恢复 ,因此气藏开发过程中 ,应注意生产压差的控制 ,避免因地层压力下降太快而导致微裂缝和小喉道的过早关闭

Ordovician reservoirs in Tahe oilfield are typical fractured-vuggy carbonate reservoirs of fossil karst type.Progressive exploration and development pattern was adopted in the initial stage of development.Reserves were brought into production stage by stage.Vertical well pattern combining the selected "spots,lines and the whole area" was applied to control the reserves.Reservoir prediction and identification technologies with extraction and analysis of seismic attribute as the core,as well as strong acid fracturing...

Ordovician reservoirs in Tahe oilfield are typical fractured-vuggy carbonate reservoirs of fossil karst type.Progressive exploration and development pattern was adopted in the initial stage of development.Reserves were brought into production stage by stage.Vertical well pattern combining the selected "spots,lines and the whole area" was applied to control the reserves.Reservoir prediction and identification technologies with extraction and analysis of seismic attribute as the core,as well as strong acid fracturing and sidetrack horizontal drilling technologies were successfully applied in development.Success ratio of development well increased from below 60% to over 85%,discovered oil reserves in place exceeded 500 million tons,and annual production capa-city of the oilfield reached 3.5 million tons.However,several factors have influenced further improving development effects along with progress of oilfield development,such as inadequate understanding of the features of fractured-vuggy reservoirs,low reliability of discovered oil reserves,and lack of measures to enhance oil recovery and single well production capacity in mid-and late-development stages.To solve these problems,the following measures should be taken in future oilfield development:(a) compilation or adjustment of development program should be made on the basis of producing reserves or recoverable reserves;(b) enhancing control over reserves by applying combined vertical and horizontal well pattern;(c) redividing development blocks;(d) determining rational well numbers according to single well controlled reserves;and(e) determining individual well's production proration according to rational producing pressure drop.

塔河油田奥陶系油气藏是典型的古岩溶缝洞性碳酸盐岩油气藏,开发初期采取滚动勘探开发模式、分批次动用储量、“点、线、面”复合直井井网控制储量、以地震属性的提取与分析为主的储层预测与识别技术、深度酸压和侧钻水平井等技术取得了较好效果,使开发井建产成功率由不足60%提高到85%以上,探明石油地质储量突破5×108t,油田年产量达到350×104t。随着开发进程的深入,对缝洞储集体的识别精度不够,缝洞性油藏储量的可信度低,开发中后期缺乏提高采收率和单井产能的对策等方面影响了开发效果的进一步提高。为此,下步的开发工作中应采取以下措施:1)以动用储量或可采储量作为开发方案编制或调整的依据;2)用直井加水平井的复合井网增加对储量的控制;3)重新划分开发单元;4)采用单井控制储量规模确定合理开发井数;5)以合理生产压差确定单井配产。

 
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