Based nit the definition of production decline rate , the multifactor analytical model for composite decline rate is developed , which discusses affecting factors stub as the startup well number , water cut , producing fluid thickness , pressure , relative production index well spacing density , skin factor etc 摘要从产量递减率定义出发，首先导出了综合递减率与开井数、含水、产液厚度、压力、相对产液指数、井网密度、表皮系数等多因素分析模型。
To solve some questions about oil production declining quickly , production and injection patterns are imperfect , the low degree of reserves control , and the injection water not enough in injection well , we have taken measures such as strengthen the geologic integrated research , drill extension well and adjustment well , strengthen water injection system , and optimize fracturing techniques , which has improved reservoir development effect 为了解决产量递减快、注采井网不完善、储量控制程度低、注水井欠注等问题，采取加强地质综合研究、钻扩边井和调整井、强化注水系统和优化压裂工艺等措施，有效地改善了油藏开发效果。
Leng 43 block was developed in 1993 and since then conventional fracturing conduction , water flooding test , steam soaking were successively carried out , but exposing several inconsistencies such as high decline rate of output , water flooding fingering , low potential of steam soaking etc . among them the physical properties is an important factor that affecting the result of development 该块从1993年投入开发以来，先后进行过先期压裂常规开采、注水开发试验、蒸汽吞吐开采，但是暴露出常规开采产量递减快、水驱指进、蒸汽吞吐潜力小等矛盾，其中储层特征是影响其开发效果的一个主要因素。
The reservoirs located in l area of qx oil field fall into lithological fractured reservoir . the fractures have made up of both the primary reservoir space of oil and gas and the central permeating channel of oil and gas . the reserve and productivity of oil and gas in the field are basically controlled by the develop and distribution of fissures . due to the existence of fissures , the exploration to the area is extremely difficult early , and the earlier production declines fast after development , and the yield is very unstable . therefore , this dissertation is going to focus on the type identification of fractured reservoir , the log geology interpretation of characteristic of reservoir porosity and permeability and the develop and distribution pattern of reservoir fracture Qx油田l区块属于岩性?裂缝性油藏，裂缝既构成了该油田油气的主要储集空间，又成为油气的重要渗流通道。裂缝的发育程度和分布规律基本上控制了该油田的油气富集程度和产能高低。裂缝的存在使得该油田的初期勘探难度极大，开发后投产初期产量递减很快，且产量不易稳定，对生产经营构成很大威胁。
