The Study On Horizontal Well And MRC's Adaptability To Liaohe Oilfield

Horizontal well technology originates from abroad in 1928.It puts into practice in the forties and begins large-scale industrial application in the eighties.The technology is mainly used in three types of reservoir's development:oil sheet,naturally fractured reservoir,reservoir with bottom water coning.MRC is the new technology which developed in the early 21st century.The technology adopts long horizontal section,multilateral well,herringbone well and other special track well to furthest expose hydrocarbon discharge area of the reservoir,thus get high individual well producing rate.MRC is the acronym of Maximum Reservoir Contact Wells,but there is another wording:Maximum Reservoir Contribution.This paper more inclined to the latter.This paper studies horizontal well in Liaohe Oilfield and MRC production feature,and analyzes factors affecting development result,such as single well controlled reserves,formation pressure,development mode,reservoir parameter,injection-production parameter.Through the research of the study on horizontal well and MRC's adaptability to Liaohe Oilfield,we realize that maximum reservoir contribution is MRC's pursuit of the goal.In the practical application in Liaohe Oilfield,large-scale implementation MRC wells all obtains better result,and MRC wells can work with the reservoir conditions to adapt to each other.At present,the main factors that affect MRC well's production effect including branch length,fracture penetration coefficient,energy complement,producing degree and well interference.This paper studies horizontal well and MRC's optimization deployment parameters,and puts forward technical limit in the field of well structure,branch angle,branch separation,branch length,horizontal well's lengthwise displacement and bottom water avoidance distance.This paper does the feasibility study on technological development of MRC.We put forward the reasonable development countermeasure to G block's MRC technological development,and design a producing method that bottom water injection,straight well control reservoir,horizontal well or herringbone well develops principal producing formation,meanwhile put forward horizontal well's well spacing,trunk length and other reservoir cbaracteristics.On the basis of getting a good development effect of advance test,proves its feasibility and efficiency.