Solitary West Fault Zone Paleozoic Exploration Potential

Guxi fault zone is located in the central Zhanhua sag, Bonan sag in the Northeast. Chengbei to North and South East forecourt fault with the East forecourt linked to the uplift in the south to the north alone and isolated island protruding gap between the West and in isolated West fault Bonan. Gentle slope towards the transition to the isolated North sag, the exploration area of about 200km2. With the area, Paleozoic have greater potential for exploration. Since the development of comparative fault, the fault violent activities, focused on the role of stress, Mesozoic reservoir pores, cracks and development, the transformation of fault by the reservoir, should have better. There are Guxi fault and Bonan depression of the source rocks directly docking with favorable conditions for accumulation.Although have many wells to see the good showings in the mesozoic & paleozoic group, but the home court also have many wells in, the mesozoic & paleozoic group goal level fails, and the mesozoic development effect is not ideal, also indicated in the home court the mesozoic & paleozoic group oil deposit is extremely complex, beforehand several set of earthquake material in-depth quality is bad, the cross section is not clear, The mesozoic & paleozoic group resolution and the signal-to-noise ratio were low, have restricted to this area belt thorough research and the appraisal front, after this area folded depth displacement processing material outputting, the material quality original earthquake material had the obvious improvement, increased in-depth image formation precision, the break has been clear, the signal-to-noise ratio further enhanced, appraised in this area for the whole the mesozoic & paleozoic group to provide the advantageous material guarantee. Hope through new, old material union, the thorough analysis, and strengthens the physical prospecting technology the application, carries out the advantageous oil-bearing structure, provides the high quality well position, enable the home court to contain oil the area to continue to expand.The present paper main research content includes: The collection, entire should the area drill meets the mesozoic & paleozoic group to prospect, the development well drilling, tests a newly drilled oil well and so on the materials, to had the research results to carry on the investigation and study; Prospects the material using this area, the VSP material and so on carries on the fine speed analysis to the research area, manufactures the home court the fine speed quantity board; Front uses the Guxi fault zone to fold displaces the earthquake material, in carries on the earthquake to reflect the characteristic research and in the fine position demarcation foundation, carries on the fine structure to the mesozoic & paleozoic group to explain, through changes speed in the chart technology realization paleozoic group's conformation and the break structure; Pulls equal engineering research this area using the level the paleozoic group's structure growth characteristic; the application geology, the well drilling, the seismic data research mesozoic -Neopaleozoic group' s earthquake characteristic, clarifies the mesozoic -Neopaleozoic group the advantageous reservoir growth area; to advantageous target area exploration after folding the attribute analysis, the earthquake analyze and so on reservoir description engineering research reservoir developmental mechanisms; In the quality synthetic evaluation foundation, in the analysis the mesozoic & paleozoic group becomes the Tibet rule, seeks for the advantageous exploration goal, puts forward the exploration deployment proposal.In view of the above research content, has established the following research mentality: First strengthens the foundation geological research, clarifies this area structure evolution rule, obtains from the geophysics characteristic analysis, in the key discussion mesozoic & paleozoic group' s earthquake reflects the recognition, and changes speed the chart technology through the fine velocity analysis to clarify the mesozoic & paleozoic group top and the inside story structure characteristic, is clear about each group of section stratum plane mop characteristic; Unifies the home court well drilling situation, using physical prospecting technologies and so on earthquake attribute carries on the earthquake to forecast that with the advantageous reservoir description, analyzes the sedimentary facies and the reservoir mop rule thoroughly; In the oil deposit dissection and in quality synthetic evaluation' s foundation, seeks for the advantageous exploration goal, proposed that explores the well position to deploy suggested that instructs the home court next step exploration and development.Through the research, the main achievement which obtains and knew:(1)Through the velocity analysis, has been clear about in the home court mesozoic & paleozoic group' s speed characteristic.(2) Used the Guxi fault zone three dimensional to carry on to the research area explained and arranges the chart, has carried on the structure evolution analysis, the whole structure characteristic and the structure style analysis to the research area, has been clear about mesozoic & paleozoic group's structure framework and the break characteristic, as soon as realized "two ridges, one stair" is the most advantageous structure position.(3) The comprehensive utilization earthquake, the oil well logging, the logging material have established in the orphaned west fault zone the mesozoic & paleozoic group interior measure recognition technology, has carried out the work place sub-group, three groups, the Mengyin group's stratum pinch-out line, has been clear about various measures plane mop characteristic and the reservoir characteristic, realizes the whole appraisal, the whole for this area to deploy that has created the condition.(4) Becomes the tibet characteristic in view of the different formation reservoir deposition characteristic and the area belt the difference, divided the formation to carry on the area belt to become the Tibet rule research and the fruitful target appraisal, proposed "the mesozoic & paleozoic group hydrocarbon source rock' s understanding" , "near hollow area became has the advantage the viewpoint" , has expanded the exploration mentality. Through the analysis optimal structure, the reservoir, the cap rock dispose reasonably, material and the stratum deposition, the petroleum geology condition' s and so on union earthquake, well drilling, oil well logging research, carries out one batch of advantageous exploration goal, that advantageous trap area 20km2, forecasts the amount of resources 2000×10~4t, altogether suggests well position 6.