-
Article
Tunable and switchable single-/dual-wavelength Er-doped hybrid mode-locked fiber laser by dual-PMFs Lyot filter
We propose a single- and dual-wavelength tunable and inter-soliton switchable Er-doped hybrid mode-locked fiber laser based on dual-polarization maintaining fibers (dual-PMFs) Lyot filter. The broadband satura...
-
Chapter and Conference Paper
Determination and Application of Reasonable Liquid Production at Different Water Cut Stages of Sandstone Reservoirs in South America
Obtaining maximum economic benefits during the effective contract period is an important goal for overseas oilfield development. Enhanced liquid production is an effective means to increase oil production and ...
-
Article
Reciprocal negative feedback regulation of ATF6α and PTEN promotes prostate cancer progression
Phosphatase and tensin homolog (PTEN) loss tightly correlates with prostate cancer (PCa) progression and metastasis. Inactivation of PTEN leads to abnormal activation of PI3K/AKT pathway. However, results from...
-
Article
Open AccessSystematic analysis identifies REST as an oncogenic and immunological biomarker in glioma
The repressor element 1 silencing transcription factor (REST) has been proposed to function as a transcription factor to silence gene transcription by binding to repressor element 1 (RE1), a highly conserved D...
-
Chapter and Conference Paper
Research and Application of Intelligent Auxiliary Decision-Making Platform for Lost Circulation Based on Big Data Technology
Big data/artificial intelligence technology empowers drilling engineering, which is the direction of digitization for petroleum industry. In order to study the leakage prevention and plugging intelligent auxil...
-
Chapter and Conference Paper
Development Adjustment Suggestions for Strong Edge-Bottom Water Reservoir at Ultra-high Water Cut Stage: A Case Study from a Oilfield in South America
A oilfield has sufficient natural edge-bottom water energy. It was put into development in 1978. At present, the water cut is 97%. It is faced with many problems, such as difficult to stabilize oil and control...
-
Chapter and Conference Paper
Dual Completion Technology and Effect Analysis of Multi-layer Sandstone Reservoir in South America
Multi-layer oil reservoirs developed in CNPC’s operation block in South America, and it is not allowed to conduct multi-layer combined production according to the regulations of the resource country. In view o...
-
Chapter and Conference Paper
Study on Connectivity of Porous Carbonate Reservoirs: Taking M Oilfield as an Example
M oilfield is a porous carbonate reservoir, but high angle fractures and dissolution holes are locally developed, the reservoir heterogeneity is strong, the well spacing is large in the early stage of developm...
-
Chapter and Conference Paper
Types and Distribution of Sedimentary Facies for the Cretaceous Carbonate Reservoirs in the M Oilfield
There are several major distinctions between the lacustrine carbonate rocks in the medium and large pre-salt oil fields in the Santos basin and the typical lacustrine sediments. Aside from the unique textures ...
-
Chapter and Conference Paper
Experimental Study on Oil Sands Pyrolysis
In view of high oil viscosity of bitumen, slow steam chamber expansion and serious pipeline corrosion in the oil area of oil sands developed with dual-horizontal well steam assisted gravity drainage (SAGD), se...
-
Chapter and Conference Paper
Distribution Pattern and Quantitative Characterization of Remaining Oil in Extra High Water Cut Oilfield in Ecuador
CNPC's operation block in Ecuador is a typical medium-high porosity and medium-high permeability sandstone reservoir. After 40 years of natural energy and water injection development, it is currently in the do...
-
Article
Open AccessBovine Serum Albumin Detection by Graphene Oxide Coated Long-Period Fiber Grating
A biosensor for bovine serum albumin (BSA) detection by graphene oxide (GO) functionalized micro-taped long-period fiber grating (GMLPG) was demonstrated. The amide bond connected between the GO and BSA enable...
-
Chapter and Conference Paper
Analysis of Water Flooding Effect in Oil Reservoirs with API Gradual Variety of Crude Oil
In a certain overseas operation block of CNPC, the crude oil is gradually reduced from 19.4 API ° to 8.8 API °. In the early stage of development, the pressure in some areas of the reservoir drops rapidly; bec...
-
Chapter and Conference Paper
Research on Molecular Dynamics Simulation of Oil Sands Pyrolysis
The global oil sands reserves are large and difficult to exploit. Although existing oil sands development technologies are relatively perfect, some problems such as the high cost and energy consumption of SAGD...
-
Chapter and Conference Paper
Analysis of Production Characteristics of Reservoirs with Different Fluid Properties and Adjustment Strategies
In a certain overseas operation block of CNPC, the crude oil is gradually reduced from 19.4 API° to 8.8 API°. The development faces challenges such as poor effect of new wells and serious bottom water coning. ...
-
Article
Pestalotiopsis trachicarpicola, a novel pathogen causes twig blight of Pinus bungeana (Pinaceae: Pinoideae) in China
Pinus bungeana is one of indigenous trees in China and widely distributed in poor and arid regions for vegetation and industrial woody use. However, since a high-incidence disease threatens the growth of mature P...
-
Chapter and Conference Paper
Study on the Influence of Gas Cap on SAGD Development Effect and Technical Strategy
Field development practice shows that the existence of gas cap within the oil sand reservoir will affect the development effect of SAGD. The objectives for this paper are to figure out the influence of gas cap...
-
Chapter and Conference Paper
The Optimization Strategy of Gravity Assisted Gas Drainage in Mature Oil Field Based on Experiment Design and Response Surface Methodology
Gravity Assisted Gas Drainage (GAGD) is one of the most effective options to improve sweep efficiency of mature oil fields at high water cut period, the oil recovery of which is highest among all non-miscible ...
-
Article
Open AccessApplication of principal component analysis on water flooding effect evaluation in natural edge-bottom water reservoir
Water flooding effect evaluation is considered as the basic work to formulate comprehensive adjustment measures and improve the effectiveness of oilfield development. However, natural edge-bottom water energy ...
-
Chapter and Conference Paper
Application of Optimization Method Based on Water Flooding Law in Edge and Bottom Water Reservoirs
D_F oilfield is a reservoir with strong edge and bottom water. It has been developed for 40 years by natural water flooding and artificial water injection. At present, the comprehensive water cut is 96.3%. In ...
