Under the condition of conventional seismic data, because the thickness of the whole stratum of the second member of Shahejie Formation in the south is reduced, it is wedge-shaped in the south, and the shielding effec...Under the condition of conventional seismic data, because the thickness of the whole stratum of the second member of Shahejie Formation in the south is reduced, it is wedge-shaped in the south, and the shielding effect of the interface between the overlying sand and the bottom layer or the weak seismic reflection signal, it is difficult to identify the overbreak line, which seriously affects the exploration and development of the second member of Shahejie Formation. Based on this, on the basis of target processing of seismic data and cross-well correlation of logging sequences, and combining with seismic structural attributes, the location of stratigraphic superstripping lines is preliminarily determined, and then the accurate location of stratigraphic superstripping lines is finely determined by using the included angle extrapolation technique and seismic stratigraphic method for interactive verification.展开更多
Shallow Guantao Group channel sand body oil and gas reservoir is an important part of Shengli Oilfields oil and gas reserves upgrading, and also an important practical position to increase oil reserves and production ...Shallow Guantao Group channel sand body oil and gas reservoir is an important part of Shengli Oilfields oil and gas reserves upgrading, and also an important practical position to increase oil reserves and production for a period of time. For the evaluation of Guantao Group channel sand body type oil and gas reservoirs, accurate description of oil and gas traps is the key. However, affected by the quality of seismic data, the accuracy of structural interpretation of Guantao Group has always been low, especially the large error of the fault system combination of low order faults, which directly led to the deviation of the subsequent comprehensive evaluation of oil reservoirs and target selection. Therefore, it is urgent to summarize and improve a set of targeted structural interpretation scheme of Guantao Group, and realize the oil and gas evaluation of target reservoirs under the guidance of the accurate interpretation mode, so as to improve the quality of exploration and development. Based on this, this paper takes the Guantao Group in Chengdong area of Zhanhua sag in Jiyang sag as an example, aiming at the difficulties of structural interpretation in this area, with the help of Bonan-2021 full node high-density 3D seismic data, effectively uses high-precision coherence, dip angle, ant body, fault coherence enhancement and other technologies, and finely implements the structural pattern of Guantao Group in Chengdong area through hierarchical control mode, so as to provide detailed basic seismic data for the subsequent fine evaluation of oil and gas reservoirs in this area.展开更多
文摘Under the condition of conventional seismic data, because the thickness of the whole stratum of the second member of Shahejie Formation in the south is reduced, it is wedge-shaped in the south, and the shielding effect of the interface between the overlying sand and the bottom layer or the weak seismic reflection signal, it is difficult to identify the overbreak line, which seriously affects the exploration and development of the second member of Shahejie Formation. Based on this, on the basis of target processing of seismic data and cross-well correlation of logging sequences, and combining with seismic structural attributes, the location of stratigraphic superstripping lines is preliminarily determined, and then the accurate location of stratigraphic superstripping lines is finely determined by using the included angle extrapolation technique and seismic stratigraphic method for interactive verification.
文摘Shallow Guantao Group channel sand body oil and gas reservoir is an important part of Shengli Oilfields oil and gas reserves upgrading, and also an important practical position to increase oil reserves and production for a period of time. For the evaluation of Guantao Group channel sand body type oil and gas reservoirs, accurate description of oil and gas traps is the key. However, affected by the quality of seismic data, the accuracy of structural interpretation of Guantao Group has always been low, especially the large error of the fault system combination of low order faults, which directly led to the deviation of the subsequent comprehensive evaluation of oil reservoirs and target selection. Therefore, it is urgent to summarize and improve a set of targeted structural interpretation scheme of Guantao Group, and realize the oil and gas evaluation of target reservoirs under the guidance of the accurate interpretation mode, so as to improve the quality of exploration and development. Based on this, this paper takes the Guantao Group in Chengdong area of Zhanhua sag in Jiyang sag as an example, aiming at the difficulties of structural interpretation in this area, with the help of Bonan-2021 full node high-density 3D seismic data, effectively uses high-precision coherence, dip angle, ant body, fault coherence enhancement and other technologies, and finely implements the structural pattern of Guantao Group in Chengdong area through hierarchical control mode, so as to provide detailed basic seismic data for the subsequent fine evaluation of oil and gas reservoirs in this area.
