By introducing the parameter of "residual oil volume" to quantitatively describe residual oil, the article provides the calculating formula and solution of residual oil volume controlled by a single well.

With calculating the residual oil volume of a certain block, the distribution of residual oil in the block is described, the contour line diagram is made for the residual oil volume controlled by a single well, and the residual oil volume is shown on the plan view visually.

The study finds the residual oil volume can not only describe the distribution of residual oil in detail, but also get the size of residual oil volume in different zones, which can supply the reference for tapping potential and production adjustment of residual oil in the oilfield.

Take the Middle-Lower Cambrian in the Tarim basin as an example of forward inference, the original oil-generating quantity is 2 232.24×108 t and the residual oil quantity and oil cracked gas quantity are 806.21×108 t and 106.95×1012 m3 respectively.

The measurement system of the aircraft fuel volume has characteristics of high dimensions of inputs,the nonlinearity and the strong correlation among inputs. Using adaptive network-based fuzzy inference system(ANFIS)or partial least-squares(PLS)to construct a model has some limitations.

On the basis of planiform watering-out's judgement, and then distinguish qualitatirely the planiform watering-out degree of all the the deposit unit and all the well as these three degrees: the higher, low and unwartering-out .

Then, using the watering-out data of drilled inspection chamber to set oil saturation that hi the different watering-out degrees, on the basis of it, work out the equal value of unit are a remaining oil of all the wells , at last we can work out the remaining oil of all the deposit unit, and value the potential and the distribution of the remaining oil of all the unit.

A coordination between well pattern and the area of a sandbody in an oil reservoir was suggested in the previous work[l]. After that a production process optimization model [2] was formulated with performance index for improving oil recovery and economic benefits as their objectives. As its application and extension, this paper deals with the flow and stagnant conditions of remaining oil controlled by well pattern, as well as with a method of identification for the remaining oil uncontrolled by well pattern....

A coordination between well pattern and the area of a sandbody in an oil reservoir was suggested in the previous work[l]. After that a production process optimization model [2] was formulated with performance index for improving oil recovery and economic benefits as their objectives. As its application and extension, this paper deals with the flow and stagnant conditions of remaining oil controlled by well pattern, as well as with a method of identification for the remaining oil uncontrolled by well pattern. As a result, a synergy among various conventional measures for improving oil recovery is suggested and some stimulating approaches adapted for a number of special type of oil formation and its related ideas are presented as well.

The removal of mineral oil under various states from wastewater by attapulgite adsorbents has been studied. It was found that over 90% removal rate of the floating or coarse dispersed oil could be achieved by using 1% raw attapulgite and 1mg/l PAM, while the initial oil concentration was about 500mg/l. The mixture of 2.00% attapulgite and 800mg/l aluminium sulfate was favourable for demulsification, and the removal rate of oil whose concentration was 126000mg/l, was about 98%, and of CODCr was 89%, and then...

The removal of mineral oil under various states from wastewater by attapulgite adsorbents has been studied. It was found that over 90% removal rate of the floating or coarse dispersed oil could be achieved by using 1% raw attapulgite and 1mg/l PAM, while the initial oil concentration was about 500mg/l. The mixture of 2.00% attapulgite and 800mg/l aluminium sulfate was favourable for demulsification, and the removal rate of oil whose concentration was 126000mg/l, was about 98%, and of CODCr was 89%, and then the wastewater containing emulsified oil could be clarified effectively with multi-stage successive process. The efficiency of oil removal was the power function of attapulgite amount added or the initial oil concentration, and the relationship between the amount added and the remaining concentration corresponding to the Freundlich adsorption equation, and after a lapse of time, the adsorption process could be characterized by the first order kinetics.

Based on sedimentary faces? micro-faces and interpreting model of porosity and permeability of the second segment of lower Shahejie group in eastern part of Pucheng Oil Field, this paper builds reservoir distribution and 3-D heterogeneous geological model from microstructure ?intra-layer?inter-layer and plain heterogeneity and gives some advice on the methods of development. These four heterogeneities are as a whole moderate on the high side and distribution of sedimentary micro-faces and reservoir porosity...

Based on sedimentary faces? micro-faces and interpreting model of porosity and permeability of the second segment of lower Shahejie group in eastern part of Pucheng Oil Field, this paper builds reservoir distribution and 3-D heterogeneous geological model from microstructure ?intra-layer?inter-layer and plain heterogeneity and gives some advice on the methods of development. These four heterogeneities are as a whole moderate on the high side and distribution of sedimentary micro-faces and reservoir porosity and permeability are obvious factors of controlling heterogeneity. Different mining methods should be used according to the different amount of retained oil in different sedimentary micro-faces. The enveloping and jamming technique or regulating pressure is efficient to high inter- heterogeneous sets. The continuity of sand is of the most important regard to high-heterogeneous sets in periodic flooding or reverse flooding.