Objective:To study the broad scope of the"five-wheeltheory"and perfect the theoretical system of the"fivewheel theory.Methods:By searching the literature,the five-wheel doctrine was extended in a broad ...Objective:To study the broad scope of the"five-wheeltheory"and perfect the theoretical system of the"fivewheel theory.Methods:By searching the literature,the five-wheel doctrine was extended in a broad sense,combining the traditional five-wheel doctrine and the related dialectical thinking mode of the inner five-wheel hypothesis.Conclusion:All the muscle fibers inside and outside the eye,including ciliary muscle and extraocular muscle,are controlled by the spleen.The soft tissues of the fascia represented by the suspensory ligament of lens,cornea,sclera,uvea and retina(except the components of blood vessels)are all dominated by the liver.The blood vessels inside and outside the eyes represented by the middle retinal artery are all controlled by the heart;the water and visual pathway represented by tear and aqueous humor(including refractive system and nerve conduction system)are controlled by the kidney,in which the secretion of glands is controlled by the spleen.The coordinated function of refractive system and visual pathway is controlled by the lung.展开更多
The low average single-well production,resulting in low economic benefit,has become the main bottleneck of CBM development in China.In view of this issue,through case study of a CBM gas reservoir in the southern Qinsh...The low average single-well production,resulting in low economic benefit,has become the main bottleneck of CBM development in China.In view of this issue,through case study of a CBM gas reservoir in the southern Qinshui Basin,we summarized the present status of CBM technology and development there and also pointed out some major problems in CBM development:(1)the engineering technology for the CBM development needs to adapt to the particular geological characteristics;(2)a large number of inefficient zones still exist in mature blocks in the southern Qinshui Basin;(3)single-well production can not be effectively enhanced only by increasing the fracturing scale;(4)the production of multi-lateral wells is higher,but the fulfillment rate of production capacity overall is still low;and(5)on-site management lacks scientific evidence.On this basis,we present the following suggestions for subsequent coalbed gas development:(1)the production construction mode should be changed,and the fulfillment rate of production capacity construction should be improved;(2)CBM geological research should be improved and well types and locations should be designed reasonably and scientifically;(3)main technologies should be built in a dialectical thinking mode;(4)horizontal well design should be optimized to improve the applicability of relevant technologies;(5)fracturing mode should be changed to improve single-well production;and(6)the drainage technology should be changed to improve economic efficiency.展开更多
文摘Objective:To study the broad scope of the"five-wheeltheory"and perfect the theoretical system of the"fivewheel theory.Methods:By searching the literature,the five-wheel doctrine was extended in a broad sense,combining the traditional five-wheel doctrine and the related dialectical thinking mode of the inner five-wheel hypothesis.Conclusion:All the muscle fibers inside and outside the eye,including ciliary muscle and extraocular muscle,are controlled by the spleen.The soft tissues of the fascia represented by the suspensory ligament of lens,cornea,sclera,uvea and retina(except the components of blood vessels)are all dominated by the liver.The blood vessels inside and outside the eyes represented by the middle retinal artery are all controlled by the heart;the water and visual pathway represented by tear and aqueous humor(including refractive system and nerve conduction system)are controlled by the kidney,in which the secretion of glands is controlled by the spleen.The coordinated function of refractive system and visual pathway is controlled by the lung.
基金Special and Significant Project of National Science and Technology“Horizontal Well Development Demonstration Project of Coalbed Methane in Qinshui Basin,Shanxi Province,China”(No.:2011ZX05061)Special and Significant Project of PetroChina“Exploration and Development Demonstration Project of Coal-bed Gas Field in Qinshui Basin”(No.:2010E-2208).
文摘The low average single-well production,resulting in low economic benefit,has become the main bottleneck of CBM development in China.In view of this issue,through case study of a CBM gas reservoir in the southern Qinshui Basin,we summarized the present status of CBM technology and development there and also pointed out some major problems in CBM development:(1)the engineering technology for the CBM development needs to adapt to the particular geological characteristics;(2)a large number of inefficient zones still exist in mature blocks in the southern Qinshui Basin;(3)single-well production can not be effectively enhanced only by increasing the fracturing scale;(4)the production of multi-lateral wells is higher,but the fulfillment rate of production capacity overall is still low;and(5)on-site management lacks scientific evidence.On this basis,we present the following suggestions for subsequent coalbed gas development:(1)the production construction mode should be changed,and the fulfillment rate of production capacity construction should be improved;(2)CBM geological research should be improved and well types and locations should be designed reasonably and scientifically;(3)main technologies should be built in a dialectical thinking mode;(4)horizontal well design should be optimized to improve the applicability of relevant technologies;(5)fracturing mode should be changed to improve single-well production;and(6)the drainage technology should be changed to improve economic efficiency.
