In order to accurately predict the productivity of herringbone multilateral well,a new productivity prediction model was founded.And based on this model,orthogonal test and multiple factor variance analysis were appli...In order to accurately predict the productivity of herringbone multilateral well,a new productivity prediction model was founded.And based on this model,orthogonal test and multiple factor variance analysis were applied to study optimization design of herringbone multilateral well.According to the characteristics of herringbone multilateral well,by using pressure superposition and mirror image reflection theory,the coupled model of herringbone multilateral well was developed on the basis of a three-dimensional pseudo-pressure distribution model for horizontal wells.The model was formulated in consideration of friction loss,acceleration loss of the wellbore and mixed loss at the confluence of main wellbore and branched one.After mathematical simulation on productivity of the herringbone multilateral well with the coupled model,the effects of well configuration on productivity were analyzed.The results show that lateral number is the most important factor,length of main wellbore and length of branched wellbore are the secondary ones,angle between main and branched one has the least influence.展开更多
The new developments in global politics exert three systemic impacts on international relations. Global issues, vital to the survival of mankind, rise to the top agenda of national governments. The epicenter of global...The new developments in global politics exert three systemic impacts on international relations. Global issues, vital to the survival of mankind, rise to the top agenda of national governments. The epicenter of global power is shifting from U.S. and Europe to the rest of the regions. The global "political excitement and zeal" is rolling on. All exact more on the competence of global governance. The current international multilateral mechanisms are in "competence deficit", worsening either in terms of adequacy, validity or legitimacy. The call for the reform of it is ever soaring. China by the way is at once engaging in the multilateral diplomacy transforming the international system and facing the growing pressure of assuming "leadership" and "international responsibility". China needs to continuously adapt to the changed national identity in the multilateral diplomacy, to reconcile the multilateral mechanisms that deal with regions and domains in China's strategic planning and laying-out, to organically associate the short-term and long-term goals and to upgrade the concept of harmonious world in the practice of multilateral diplomacy.展开更多
基金Project(12521044) supported by Scientific and Technological Research Program of Heilongjiang Provincial Education Department,China
文摘In order to accurately predict the productivity of herringbone multilateral well,a new productivity prediction model was founded.And based on this model,orthogonal test and multiple factor variance analysis were applied to study optimization design of herringbone multilateral well.According to the characteristics of herringbone multilateral well,by using pressure superposition and mirror image reflection theory,the coupled model of herringbone multilateral well was developed on the basis of a three-dimensional pseudo-pressure distribution model for horizontal wells.The model was formulated in consideration of friction loss,acceleration loss of the wellbore and mixed loss at the confluence of main wellbore and branched one.After mathematical simulation on productivity of the herringbone multilateral well with the coupled model,the effects of well configuration on productivity were analyzed.The results show that lateral number is the most important factor,length of main wellbore and length of branched wellbore are the secondary ones,angle between main and branched one has the least influence.
文摘The new developments in global politics exert three systemic impacts on international relations. Global issues, vital to the survival of mankind, rise to the top agenda of national governments. The epicenter of global power is shifting from U.S. and Europe to the rest of the regions. The global "political excitement and zeal" is rolling on. All exact more on the competence of global governance. The current international multilateral mechanisms are in "competence deficit", worsening either in terms of adequacy, validity or legitimacy. The call for the reform of it is ever soaring. China by the way is at once engaging in the multilateral diplomacy transforming the international system and facing the growing pressure of assuming "leadership" and "international responsibility". China needs to continuously adapt to the changed national identity in the multilateral diplomacy, to reconcile the multilateral mechanisms that deal with regions and domains in China's strategic planning and laying-out, to organically associate the short-term and long-term goals and to upgrade the concept of harmonious world in the practice of multilateral diplomacy.
