Technology Of Opening Window And Side Drilling In Horizontal Well Application At Casing Demage Well Of Daqing Oil-field

Oil-field in Daqing because of long-term of note to adopt with various factor influence, at standard layer and oil layer neighborhood result in a set of Sun, close to the end of 2005, the whole oil-field is total detection set Sun well 9912 people, have oil well total amount of 17.26%.Especially long Yuan inner part, because of a part produce of well oil the quantity sharply lower, comprehensive contain water quantity increment and even vomit a sand, has been adjusted Pou and pressed crack etc. measure also can't maintenance certain of yield, result in parts of well pass the well stop production. According to take a heart data research, majority stop production past of well through still have after noting water and gathering to get rid of about 1/3 oil layer thicknesses don't be passive to use. Therefore, to the set Sun well carry on a repair efficiently is a necessity very. Because oil-field in Daqing get into Gao Han2 Shui3 behind period development, day by day value oil-field development effect of research.Currently rightness thick oil layer surplus oil of dig a Qian technique all just improvement oil layer the Shen of the near well district flow a condition, these method to thick oil layer coping surplus the oil dig Qian total still not enough ideal.But set the tube seamy side drill instauration well point, well net function is aim at severity set Sun well of repair gradual growth get up of set Sun well repair of importance one of the craft techniques. Open a window side to drill level well inside set tube special in keeping with mine a thin layer an oil layer, crack type, point put out an etc. oil to hide, develop old oil-field to more and so boost production a method. Apply this technique is more easy than drilling renewal well and adjusting well opposite, and economy can line. Make use of Gao Guan Jing3 and set Sun well openned a window side to drill a kick even well scoop out and use of surplus oil, since can full make use of original well, again come to a development surplus oil of purpose.