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1 There are almost 60% of the geological reserves still underground.

2 Moreover, it is urgent for accurate geological reserves to carry on the fine logging interpretation on the fractured reservoir of Shi 35 well field.

3 Their producing geological reserves cover 22.2% of their proved reserves and 28.8% of the producing geological reserves in Liaohe oil zone.

4 Geological reserves of oil and natural gas is reserves in the ground,(www.Sentencedict.com) and it is a comprehensive reflection of oil and gas exploration and development.

5 Limited gas geological reserves have been found and identified in the area mainly because of few exploratory wells and low exploration and research level in middle- and deep-level strata in the area.

6 Ansai oilfield has the largest oil geological reserves in Ordos Basin, and the most well know extra permeability oilfield in the world, too.

7 Eight low resistance oil reservoirs with 0.9 square kilometersoil-bearing area and 118 X 104 tons geological reserves are found by researching fault sealing.

8 The ultimate oil recovery after polymer flooding is almost 50%. A half geological reserves remaining oil can not be swept and driven by water flooding.

9 The use of fuzzy comprehensive evaluation method and the variability index analysis principle, the Changqing low eability gas reservoir rocks to assess the reliability of geological reserves.

10 Using the principle of"ore deposit is controlled by structure"and through combining of trench with hole, the new geological reserves of ore are detected that prolongs the service life of mine.

11 With the application of the volume method, natural gas geological reserves and oil geological reserves of the oil formation of Sa0 are calculated.

12 In our country, carbonate reservoirs has distributed widely and owns rather geological reserves.

13 The latter one Pays emphasis on drilling wells and appraisal wells , with an attn to expand the petroleum area and increase proven oil and gas geological reserves.

14 The effects of cemented layer on the evaluation of geological reserves and dredging operation were analysed and the suggestion for its disposal was put forward by the author.

15 With the increase on well pattern infilling, there is a growing trend towards the geological reserves of all the sand bodies except unstable sheet sand bodies of delta outer front subfacies.