The Research On Drilling Fluid Of ShallowHorizontal Well In FuYu Area Of Jilin Oilfield

Through the experiment research of Optimization drilling fluid agent and some aspects of drilling physical properties, according to geographical situation and request of exploration, the paper on the foundation of exploration manner of shallow horizontal well and basis of wellbore structure, it makes the final decision to take advantage of shallow horizontal well drilling fluid by using small work-over rig in FUYU area .The ultimate Polymer water-based drilling fluid system is: 3% bentonite + 0.2%KPA + 1%ammonium + 1%HA resin + 1% anti-collapse lubricant agent +1% emulsified asphalt +1%ORH +1%DYRH-3 + 0.08%XC + 1%JYW-1 + 3% ultra-fine calcium carbonate.This polymer water-based drilling fluid system has good shearing and diluting Nature, strong inhibiting performance and can low the friction and lubricate better. It can plug the pore of the oil-gas layer near the well hole and can protect the reservoir well. Its performance can be adjust easily and fast and can adapt the request of the underground complicate situation in order to predict the well leakage.This polymer water-based drilling fluid system is used to low the risk of drill pipe rotating torque and sticking accident. It can increase the speed of drilling, logging successful ratio and makes cementing Quality better.Ultimately it formats the shallow horizontal drilling fluid technology which can meet the demand of geology, oil production and economic in FUYU area.The practical application can show: this shallow horizontal drilling fluid can meet the demand of geology and oil production and the drilling technology can be achieved easily and be applied economically.