内蒙古石油化工
內矇古石油化工
내몽고석유화공
INNER MONGULIA PETROCHEMICAL INDUSTRY
2011年
18期
72-74
,共3页
松南气田%产能评价%火山机构%储层物性%边底水%井型
鬆南氣田%產能評價%火山機構%儲層物性%邊底水%井型
송남기전%산능평개%화산궤구%저층물성%변저수%정형
Songnan gas field%Production evaluation%Volcanic edifices%Reservoir properties%Edge of bottom water%Well type
松南气田火山岩气藏产能评价主要以修正等时试井或回压试井为主,通过＂二项式＂或＂一点法＂计算无阻流量,但是由于火山岩成藏及储层分布的特殊性,无阻流量不能完全真实反映各井产能,因此结合压降储量、单位平方压差下产气量对比及试采情况对产能进行综合评价,发现各井产能存在较大差异,通过地质分析认为产能的主控因素：火山机构、储层物性、井型及边底水影响;依此认识,松南气田下一步井位优化部署主要以S1火山机构为主,选取构造位置相对较高和古地形相对较高位置布井,井型以水平井为主,井轨迹尽可能选择高孔渗体和裂缝相对发育部位,以获得较高单井产能,同时也利于规避底水锥进的风险。
鬆南氣田火山巖氣藏產能評價主要以脩正等時試井或迴壓試井為主,通過＂二項式＂或＂一點法＂計算無阻流量,但是由于火山巖成藏及儲層分佈的特殊性,無阻流量不能完全真實反映各井產能,因此結閤壓降儲量、單位平方壓差下產氣量對比及試採情況對產能進行綜閤評價,髮現各井產能存在較大差異,通過地質分析認為產能的主控因素：火山機構、儲層物性、井型及邊底水影響;依此認識,鬆南氣田下一步井位優化部署主要以S1火山機構為主,選取構造位置相對較高和古地形相對較高位置佈井,井型以水平井為主,井軌跡儘可能選擇高孔滲體和裂縫相對髮育部位,以穫得較高單井產能,同時也利于規避底水錐進的風險。
송남기전화산암기장산능평개주요이수정등시시정혹회압시정위주,통과＂이항식＂혹＂일점법＂계산무조류량,단시유우화산암성장급저층분포적특수성,무조류량불능완전진실반영각정산능,인차결합압강저량、단위평방압차하산기량대비급시채정황대산능진행종합평개,발현각정산능존재교대차이,통과지질분석인위산능적주공인소：화산궤구、저층물성、정형급변저수영향;의차인식,송남기전하일보정위우화부서주요이S1화산궤구위주,선취구조위치상대교고화고지형상대교고위치포정,정형이수평정위주,정궤적진가능선택고공삼체화렬봉상대발육부위,이획득교고단정산능,동시야리우규피저수추진적풍험。
Songnan volcanic gas field production evaluate mainly in the main of modified isochronal test or back pressure test,through the ＂binomial＂ or ＂single point methods＂ calculate AOF,but due to volcanic reservoir and reservoir distribution of particularity,But AOF can＇t fully reflect the well productivity,the combination of drawdown reserves,the unit square differential pressure gas production comparison and production conditions,a comprehensive assessment found that the well productivity are quite different,through geological analysis that the capacity of the master factors： the volcanic edifice,reservoir properties,well type and the edge of bottom water;so understanding the next step in the gas well location optimization Songnan deployment,mainly in the S1 main volcanic edifice,select the structure and location of the ancient terrain is relatively higher position,well-type horizontal wells,the main track as well select the high porosity and permeability relative development of body parts and cracks in order to obtain a higher well productivity,but also help avoid the risk of bottom water coning.
