您要查找的是不是：
- Fine silt control by artificial borehole wall 人工井壁防治細粉砂技術(shù)研究
- Artificial borehole diaphragm wall and reverse construction method are adopted according to the characteristics. 根據此特點(diǎn),選擇人工成孔地下連續墻逆作法施工。
- It showed that eccentric pressure is produced by eccentric decouple charge blasting on borehole wall. 實(shí)驗結果表明，偏心不耦合裝藥在孔壁上形成明顯的偏心應力場(chǎng)。
- Good economic efficiency can be obtained when this mud is applied in borehole wall sloughing in water sensitive shales. 該體系可解決強水敏頁(yè)巖的井眼失穩問(wèn)題 ,具有良好的經(jīng)濟效益。
- There is stress concentration near borehole wall，where rock s drillability gets worse.It is explained that the side of PDC bits is easy to be damaged. 靠近井壁區域存在應力集中現象，巖石可鉆性變差，這是PDC鉆頭外側易損壞的原因。
- That is, high core recovery and borehole wall stability would be mainly realized by new type fluidic coring tools and environmental protective drilling fluid system(Epm). 重點(diǎn)通過(guò)研制新型射流式取心鉆具和環(huán)保型鉆井液體系(EPM)來(lái)實(shí)現提高巖心采取率和孔壁穩定性的預期目標。
- The limit value of drilling fluid density for avoidingthe borehole wall instability and the hydrostatic column pressure model were also determinedin this paper. 并根據井壁面巖塊的極限穩定條件，建立了防止井壁巖塊失穩的極限及井內鉆井液柱壓力模型。
- Especially in nonresistant strata，in order to keep borehole wall stability we usually raise the drilling fluid density，but it seriously impede the rate of penetration. 尤其是不穩定地層，常?？刻岣咩@井液密度來(lái)保證井壁穩定，嚴重的制約了鉆速的提高。
- Considering the friction of borehole wall against water moving with high speed,a physical model of water stemming movement in water blasting is set up in this paper. 本文計及水在高速運動(dòng)時(shí)與壁面的摩擦阻力，建立了水封爆破水塞運動(dòng)的物理模型。
- The borehole ultrasonic imaging method can precisely reflect the smoothness of the borehole wall, and then judge the weathering degree of the rock and determine thickness of the weathering bed. 摘要鉆孔超聲成像方法能精確地反映井壁的光滑情況，進(jìn)而判斷巖石的風(fēng)化發(fā)育程度，確定風(fēng)化層的厚度。
- Based on the characteristics of environmental scientific drilling and in accordance with the main problems existed, this research project centres on the coring technique and the borehole wall and core protection technique by drilling fluid. 本研究根據環(huán)境科學(xué)鉆探的特點(diǎn)和存在的主要問(wèn)題,重點(diǎn)開(kāi)展取心技術(shù)和鉆井液護壁護心技術(shù)研究,以解決環(huán)境科學(xué)鉆探工程中取心率低、孔壁穩定性差這兩大技術(shù)難題。
- North W12-1 Oilfield in Zhanjiang of Guangdong province has drilling problems of borehole wall collapse and stripping, which had often caused accidents of well and instrument burial. 摘要廣東湛江W12-1北油田開(kāi)發(fā)過(guò)程中遇到了鉆井中井壁易垮塌、易剝落的難題，易造成井壁坍塌、掩埋鉆井及儀器事故。
- The echo time image of cir- cumferential borehole imaging log(CBIL)can visually depict the behaviors of borehole wall such as wellbore avalanche, fracturing under reservoir bed stress. 井周聲波成像測井(CBIL)回波時(shí)間圖像能夠直觀(guān)地反映儲層應力作用下的井壁表現如井眼崩落、裂縫等,根據這些應力響應特征可以判斷儲層的應力方向。
- The dynamic boundary condition between revolving drill string and borehole wall is one of the fundamental research contents of drilling string dynamics and torque and drag calculation. 旋轉鉆柱與井壁的碰撞摩擦邊界是鉆柱動(dòng)力學(xué)研究和摩阻扭矩計算的基礎研究?jì)热荨?/li>
- SC can remarkably inhibited mud shale dispersion, keep the borehole wall steady.At the same time, on the base of inherent these, SC form hydrophobic property membrane on the drill bit and BHA. 實(shí)驗表明，本文所研究的產(chǎn)物中具有一定分子參數的共聚產(chǎn)品耐鹽、抗鈣、耐溫性好，具有較強的抑制性和潤滑性以及降失水能力，是一種多功能的新型兩性離子聚合物。
- The LWD density logging was influenced by several factors such as bore size,stand off between logging tool and borehole wall,mud density,mud cake,cuttings,water cushion and mud invasion. 水平井隨鉆過(guò)程中的密度測井要受井眼尺寸、儀器和井壁的間隙、泥漿比重(含氫量)、泥餅、巖屑、水墊、泥漿侵入等環(huán)境影響。
- The borehole ultrasonic imaging method can precisely reflect the smoothness of the borehole wall, and then judge the weath-ering degree of the rock and determine thickness of the weathering bed. 鉆孔超聲成像方法能精確地反映井壁的光滑情況,進(jìn)而判斷巖石的風(fēng)化發(fā)育程度,確定風(fēng)化層的厚度。
- THY temporary plugging agent is used to bridge off reservoir pore, produce borehole wall shielding zone, and then reduce leakage of workover fluid by taking oil-soluble resin as bridging - off agent. THY修井暫堵劑是以油溶性樹(shù)脂作為橋堵劑;橋堵儲層孔道;在井壁形成屏敝層.;從而減少修井液的漏失。
- This dress is made of artificial fibers. 這件衣服是人造纖維的。
- Her artificial gaiety disguised an inner sadness. 她以矯揉造作的快樂(lè )掩飾著(zhù)內心的悲痛。
