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The Nanpu Oilfield is characterized by complex structures and small oil bearing sand bodies. Currently, it has entered the middle and late stages of reservoir development, and potential research on sidetracking is being carried out to achieve efficient production. To address the issue of difficult utilization of uncontrolled reserves in the well network, a comprehensive study on geological reservoir integration will be carried out. Fine implement the structure, reservoir, and potential for tapping remaining oil. Based on the different main controlling factors for oil and gas enrichment in different oil reservoir types, summarize six optimization methods for sidetracking targets in three types of remaining oil from the aspects of structure, reservoir, fluid properties, and remaining oil distribution characteristics. ① In heavy oil reservoirs, layer alignment is carried out, combined with the development of heavy oil reservoirs through huff and puff, reasonable well spacing is analyzed, and wells are located in areas where remaining oil is enriched between wells; ➁ According to the influence of the interlayer on the distribution of remaining oil, wells are located in the interlayer distribution area; ③ Test oil production in low areas or oil well production, determine reservoir distribution, and deploy side drilling in high areas or unused areas; ④ Carry out detailed interpretation of the structure, in areas where the occurrence of strata widens and slows down, and the oil bearing area increases; ⑤ Determine the location of the fault and excavate the remaining oil at the root of the fault along the high parts of the fault edge; ⑥ Fine structural interpretation is used to implement structural ridges, and lateral drilling is used to tap into remaining oil potential. Selecting lateral drilling targets based on different reservoir characteristics, starting from the main contradictions of the reservoir, is more targeted and provides a basis for well deployment plans. It can effectively improve the yield of well locations and has promotional value for similar reservoirs.

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Research on Optimization Method of Side Drilling Target in Nanpu Oilfield

  • 会议论文

  • 发表日期：

    2025年

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  • Li-li Qu,
  • Dong-min Li,
  • Jin-kui Tang,
  • Xue Xue,
  • Wei-qiang Lin,
  • Ying-biao Wang,
  • Peng Huang

摘要

The Nanpu Oilfield is characterized by complex structures and small oil bearing sand bodies. Currently, it has entered the middle and late stages of reservoir development, and potential research on sidetracking is being carried out to achieve efficient production. To address the issue of difficult utilization of uncontrolled reserves in the well network, a comprehensive study on geological reservoir integration will be carried out. Fine implement the structure, reservoir, and potential for tapping remaining oil. Based on the different main controlling factors for oil and gas enrichment in different oil reservoir types, summarize six optimization methods for sidetracking targets in three types of remaining oil from the aspects of structure, reservoir, fluid properties, and remaining oil distribution characteristics. ① In heavy oil reservoirs, layer alignment is carried out, combined with the development of heavy oil reservoirs through huff and puff, reasonable well spacing is analyzed, and wells are located in areas where remaining oil is enriched between wells; ➁ According to the influence of the interlayer on the distribution of remaining oil, wells are located in the interlayer distribution area; ③ Test oil production in low areas or oil well production, determine reservoir distribution, and deploy side drilling in high areas or unused areas; ④ Carry out detailed interpretation of the structure, in areas where the occurrence of strata widens and slows down, and the oil bearing area increases; ⑤ Determine the location of the fault and excavate the remaining oil at the root of the fault along the high parts of the fault edge; ⑥ Fine structural interpretation is used to implement structural ridges, and lateral drilling is used to tap into remaining oil potential. Selecting lateral drilling targets based on different reservoir characteristics, starting from the main contradictions of the reservoir, is more targeted and provides a basis for well deployment plans. It can effectively improve the yield of well locations and has promotional value for similar reservoirs.