重庆科技学院学报:自然科学版
重慶科技學院學報:自然科學版
중경과기학원학보:자연과학판
Journal of Chongqing University of Science and Technology:Natural Science Edition
2011年
4期
47-51
,共5页
张晓明%殷国瑞%胡瑞%骆高峻%李章元%苟恒兴
張曉明%慇國瑞%鬍瑞%駱高峻%李章元%茍恆興
장효명%은국서%호서%락고준%리장원%구항흥
铁边城地区%侏罗系延安组%浅水三角洲%沉积特征%布井
鐵邊城地區%侏囉繫延安組%淺水三角洲%沉積特徵%佈井
철변성지구%주라계연안조%천수삼각주%침적특정%포정
Tiebiancheng area%JurassicYan'an formation%shallow water delta%sedimentary characteristics%well spacing methods
以铁边城地区侏罗系延安组延8储层为例,分析浅水三角洲的沉积特征。指出该类三角洲的骨架部分由分流河道砂体构成,是铁边城地区侏罗系延安组延8油藏主要储集层。该类砂体储层平面厚度变化大,垂向上相互叠加,开发时对布井要求较高。铁边城地区采用不规则正方形反九点布井方法,在储层变薄变差的砂体边部,适当缩小井距,可规避落空井的风险。
以鐵邊城地區侏囉繫延安組延8儲層為例,分析淺水三角洲的沉積特徵。指齣該類三角洲的骨架部分由分流河道砂體構成,是鐵邊城地區侏囉繫延安組延8油藏主要儲集層。該類砂體儲層平麵厚度變化大,垂嚮上相互疊加,開髮時對佈井要求較高。鐵邊城地區採用不規則正方形反九點佈井方法,在儲層變薄變差的砂體邊部,適噹縮小井距,可規避落空井的風險。
이철변성지구주라계연안조연8저층위례,분석천수삼각주적침적특정。지출해류삼각주적골가부분유분류하도사체구성,시철변성지구주라계연안조연8유장주요저집층。해류사체저층평면후도변화대,수향상상호첩가,개발시대포정요구교고。철변성지구채용불규칙정방형반구점포정방법,재저층변박변차적사체변부,괄당축소정거,가규피락공정적풍험。
Taking the eighth layer of Jurassic Yan'an Formation in Tiebiancheng area for example,this paper analyzes sedimentary characteristics of shallow water delta and indicates that the distributors channel sand bodies are the main reservoir strata of the eighth layer of Jurassic Yan'an Formation in Tiebiancheng area,making up the skeleton of this kind of delta.Since the reservoir plane thickness of this kind of sand bodies varies a lot and the sand bodies superimpose reciprocally in the vertical direction,placing of well is a demanding job while developing this kind of reservoir.Irregular square inverted nine spot well spacing pattern is adopted in Tiebiancheng area,while well spacing is reduced appropriately in the edge of sand body where reservoir is thinned and poorer to evade the risk of stepout well.The drilling success ratio reaches one hundred percent in this area in 2010 and the individual well producing rate of development oil well has as an average of 6.8 tons per day the first three months of this year,as a result,the development effect of the reservoir is preferable.