이전|다음

사천 남부 지역 해성 층계의 저장소 형성 모델 및 석유 가스 탐사 잠재력

  • role： First author第一作者
  • Affiliation：

    Petroleum Exploration and Production Research Institute， SINOPEC， Beijing 102206， China

    Key Laboratory of Geology and Resources in Deep Stratum， SINOPEC， Beijing 102206， China

  • Email：zhouyan.syky@sinopec.com
  • Introduction：周雁（1967—），男，博士、教授级高级工程师，石油天然气地质和勘探。E‑mail： zhouyan.syky@sinopec.com。
ZHOU Yan12,  
  • Affiliation：

    Petroleum Exploration and Production Research Institute， SINOPEC， Beijing 102206， China

    Key Laboratory of Geology and Resources in Deep Stratum， SINOPEC， Beijing 102206， China

ZHANG Dianwei12,  
  • Affiliation：

    Southwest Oil & Gas Company， SINOPEC， Chengdu， Sichuan 610041， China

MENG Xianwu3,  
  • Affiliation：

    Petroleum Exploration and Production Research Institute， SINOPEC， Beijing 102206， China

    Key Laboratory of Geology and Resources in Deep Stratum， SINOPEC， Beijing 102206， China

HUANGFU Ruilin12,  
  • Affiliation：

    Southwest Oil & Gas Company， SINOPEC， Chengdu， Sichuan 610041， China

SONG Xiaobo3,  
  • Affiliation：

    Southwest Oil & Gas Company， SINOPEC， Chengdu， Sichuan 610041， China

CAO Bo3,  
  • Affiliation：

    Petroleum Exploration and Production Research Institute， SINOPEC， Beijing 102206， China

    Key Laboratory of Geology and Resources in Deep Stratum， SINOPEC， Beijing 102206， China

LU Lipeng12,  
  • Affiliation：

    Petroleum Exploration and Production Research Institute， SINOPEC， Beijing 102206， China

    Key Laboratory of Geology and Resources in Deep Stratum， SINOPEC， Beijing 102206， China

LI Shuangjian12

추상적인

사천 분지 남부의 해성 층계는 일반적으로 가스를 함유하고 있지만, 분지의 다른 지역에 비해 석유 및 가스 탐사 발견과 자원 잠재력이 아직 부합하지 않고 있으며, 저장소 형성의 주요 통제 요인이 명확하지 않고 대규모 저장소 분포 법칙이 불명확한 것이 주요 제한 요인입니다. 최신 탐사 진전과 다수의 야외 단면 분석, 시추 코어 테스트 자료 연구 및 지진 자료 해석 등을 기반으로 구조-퇴적 분이 각도에서 사천 남부 지역의 해성 주요 층계의 저장소 형성과 탐사 잠재력을 총체적으로 연구 평가했습니다. 연구 결과에 따르면, 사천 남부 지역은 전 분지와 통일된 진화 단계 및 순환을 갖지만, 용문산 구조대와 다바-미창 구조대에서 멀리 떨어져 있어 분지 가장자리 지역 구조 응력의 영향이 약하며, 퇴적 충진과 진화는 전형적인 약한 신전-약한 압축 동력학 기제를 가집니다. 그 분이 특성은 전반적으로 진단기-초기 캄브리아기의 균열 분이, 중-후기 캄브리아기-실루리아기의 융기-분지 분이, 초기-중기 석탄기의 활성화 분이 및 후기 석탄기-중기 트라이아스기의 고지형 분이로 나타나며, 후기 트라이아스기 이후에는 주로 중첩 개조 특성을 보입니다. 약한 분이 동력 배경에 의해 제어되어 3종류의 저장소 형성 모델을 확인했습니다: ① “두 상(相)과 한 장(场)” 연속 저장소 형성 모델로, 퇴적상, 성인상 및 압력장 등 3대 요소를 포함합니다. 저장 공간 구조와 진화 과정에서, 퇴적상은 팽창 미네랄 풍부 환경을 구축하고, 충분한 미네랄 전환이 팽창 기초를 제공하며; 성인상은 팽창 동력 개조 조건을 촉진하고, 광범위한 준동시 용식 작용이 저장 공간을 개선하며; 압력장은 저장 공간의 지속적 유효성을 유지하고, 안정적인 초과압 체계가 효과적인 저장 능력을 보장합니다. ② “상-용-단” 복합 저장 모델로, 유리한 상대, 용식 확장 및 층간 단층 등 3대 저장 요소를 포함합니다. 유리한 상대는 기반으로서 집결 단위를 거시적으로 제어하고; 용식 확장이 핵심으로 지역적으로 축적 구조를 제어하며; 층간 단층이 공간적으로 풍부 부위를 제어하고, 석유 및 가스는 주로 대지 가장자리 또는 대지 경사대에 분포합니다. ③ “퇴적-성인” 복합 중첩 저장 모델로, 퇴적상과 성인상 2대 요소를 포함합니다. 원시 고에너지 상대는 대규모 우수 저장체 발달의 기반이며; 구조 융기로 인한 준동시기 지대 석회 작용은 대규모 우수 저장층 품질 등급 및 공간 위치의 핵심이며; 초기 유리한 퇴적상대와 준동시기의 성인상대가 중첩되어 두 상 복합대가 형성되며, 대규모 우수 저장층 분포 법칙을 결정합니다. 4종 퇴적 분이 배경과 3종 저장소 형성 모델의 공동 제어 아래, 사천 남부 지역은 인근원 해성, 측접 백운암, 상-용-단 및 셰일석회암 등 4종의 석유 및 가스층을 형성했습니다. 이러한 축적 모델은 공간적으로 질서 있게 분포하며, 사천 남부 해성 층서의 입체적 탐사 잠재력을 구성합니다. 동시에 다양한 저장소 및 축적 유형에 따라 분포 층위를 분석하고, 잠재적인 탐사 우호 구역을 지적했습니다.

키워드

생성 메커니즘; 저장소 유형; 퇴적 분이; 저장소 모델; 해성 층서; 사천 남부 지역

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