复杂油气藏
複雜油氣藏
복잡유기장
COMPLEX HYDROCARBON RESERVOIRS
2014年
3期
11-15
,共5页
蚂蚁追踪%层次建模%确定性建模%随机建模%离散裂缝网络模型%裂缝属性模型
螞蟻追蹤%層次建模%確定性建模%隨機建模%離散裂縫網絡模型%裂縫屬性模型
마의추종%층차건모%학정성건모%수궤건모%리산렬봉망락모형%렬봉속성모형
ant tracking%hierarchical modeling%deterministic modeling%stochastic modeling%discrete fracture network model%fracture properties model
储层中的裂缝具有明显的层次性,而且小尺度裂缝的发育分布受到大尺度裂缝的控制。针对这种情况,提出以蚂蚁追踪技术为基础,遵循层次建模的原则,通过分级控制分层次进行裂缝型储层建模。利用蚂蚁追踪技术生成蚂蚁属性体,运用断裂自动提取技术从属性体中提取断片,再采用确定性建模方法建立大尺度裂缝离散模型;利用蚂蚁体属性模型约束单井裂缝密度,使用退火模拟算法,通过插值得到裂缝密度分布模型。再在裂缝产状统计数据与裂缝密度分布模型的约束下,采用示点性过程的随机建模方法,建立小尺度裂缝离散模型;通过经验公式计算得出裂缝开度和传导率,再运用 Oda 数据统计算法,将裂缝网络模型粗化成裂缝属性模型。为该类油藏的开发提供理论基础。
儲層中的裂縫具有明顯的層次性,而且小呎度裂縫的髮育分佈受到大呎度裂縫的控製。針對這種情況,提齣以螞蟻追蹤技術為基礎,遵循層次建模的原則,通過分級控製分層次進行裂縫型儲層建模。利用螞蟻追蹤技術生成螞蟻屬性體,運用斷裂自動提取技術從屬性體中提取斷片,再採用確定性建模方法建立大呎度裂縫離散模型;利用螞蟻體屬性模型約束單井裂縫密度,使用退火模擬算法,通過插值得到裂縫密度分佈模型。再在裂縫產狀統計數據與裂縫密度分佈模型的約束下,採用示點性過程的隨機建模方法,建立小呎度裂縫離散模型;通過經驗公式計算得齣裂縫開度和傳導率,再運用 Oda 數據統計算法,將裂縫網絡模型粗化成裂縫屬性模型。為該類油藏的開髮提供理論基礎。
저층중적렬봉구유명현적층차성,이차소척도렬봉적발육분포수도대척도렬봉적공제。침대저충정황,제출이마의추종기술위기출,준순층차건모적원칙,통과분급공제분층차진행렬봉형저층건모。이용마의추종기술생성마의속성체,운용단렬자동제취기술종속성체중제취단편,재채용학정성건모방법건립대척도렬봉리산모형;이용마의체속성모형약속단정렬봉밀도,사용퇴화모의산법,통과삽치득도렬봉밀도분포모형。재재렬봉산상통계수거여렬봉밀도분포모형적약속하,채용시점성과정적수궤건모방법,건립소척도렬봉리산모형;통과경험공식계산득출렬봉개도화전도솔,재운용 Oda 수거통계산법,장렬봉망락모형조화성렬봉속성모형。위해류유장적개발제공이론기출。
The fractures in the reservoirs have obvious hierarchy,and the distribution of small scale fractures are con-trolled by the large scale fractures. For this case,the paper proposed that based on the ant tracking technology,the fractured reservoir modeling was built according to the principle of hierarchical modeling. Using ant tracking technology to generate ant attribute body,and applying automatic extraction technology to extract fracture fragments from the ant body,then the deterministic discrete distribution model of large scale fractures was built. Under ant body volume constraints,the fracture density distribution model was generated through the single - well data interpolation by the methods of annealing simula-tion. And then under the constraints of fracture occurrence statistical data and the fracture density distribution model,the discrete distribution model of small scale fractures was set up by the method of object - based marked point processes sim-ulation. Calculating the aperture and transmissivity through empirical formulas,then we converted the discrete fracture net-work model into fracture properties model by the Oda statistical upscaling method. The method proposed in this paper can be used in fractured reservoir modeling and provides theoretical basement for reservoir exploration.