需要金幣： 1000 個金幣 |
資料包括：完整論文 |  |
 |
| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字數(shù)：23473 |  | |
| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要：在鉆井過程中，井斜是一個普遍存在的問題，它直接關(guān)系到井身質(zhì)量和鉆井速度。幾十年來，人們在這一領(lǐng)域的努力取得了很大進展，鉆井防斜技術(shù)水平得到很大的提高。但就目前的發(fā)展情況來看，井斜問題尚未在根本上得到解決。鉆井防斜技術(shù)尚未取得質(zhì)的突破，因此，在提高機械鉆速的同時，怎么能夠有效的控制井斜是鉆井工作者長期以來非常關(guān)注的問題。PDC鉆頭是20世紀80年代研制出的以聚晶金剛石復合片為切削齒。PDC鉆頭具有在小鉆壓下能獲得較高鉆速的特點，這樣就使得其具有在單位時間內(nèi)較高進尺的特點，能過減小鉆井成本。這就使得PDC鉆頭在鉆井工程中得到廣泛的應用。運用ADINA軟件分析鉆頭破巖過程，進而分析鉆頭受力。在鉆井實踐過程中，通過研究人員地不斷努力，在總結(jié)各種防斜鉆具組合的基礎(chǔ)上，單彎螺桿鉆具由于自身結(jié)構(gòu)的特點，單彎螺桿鉆具控制井斜的原理是從鉆具本身考慮如何來增大鉆頭的側(cè)向力。使其與傳統(tǒng)的防斜鉆具相比不僅具有更為顯著控制井斜的效果，而且利用單彎螺桿鉆具和PDC鉆頭的鉆具組合結(jié)構(gòu)進行井斜控制，能夠在低鉆壓、高鉆速條件下有效地控制井斜。單彎螺桿鉆具與普通鉆具相比，在單位進尺相同條件下，PDC鉆頭切削下井壁的次數(shù)能高出2-4倍。因此，單彎螺桿鉆具組合有較強的井斜控制能力。 關(guān)鍵詞：單彎螺桿；PDC鉆頭；井斜控制；ADINA軟件
Abstract：During the drilling, well deviation is a common problem, it is directly related to the quality of the well bore and the speed of drilling． For decades, efforts of the people in this area has made great progress ,the technical level in drilling deviation control has been greatly improved． But the current development situation, the well deflection has not been fundamentally resolved． Drilling deviation control technology is not yet made ??a qualitative breakthrough, Although, in the same time improve penetration rate , the drilling workers has long been of great concern on how to effectively control the well deviation ． PDC bit is developed in the 1980s, which cutter is the polycrystalline diamond compact , the PDC bits can get the higher rate of penetration with small drill pressure ． that makes its higher unit time drilling footage ,which can reduce the cost of drilling． This makes the PDC bit has been widely used in drilling engineering． Using the ADINA software analyzes the process of bit rock．Analyze the force of the bit. In the process of drilling practice, though the efforts of the researchers continue efforts on the basis of summing up all kinds of anti-deflection BHA, the single bend screw drill due to the characteristics of their own structure, the principle of single curved screw drill to control the well deviation is how to increase the lateral force of the drill bit from the drill itself． Compared with the traditional anti-oblique drill , the single bend screw drill has the more significant the effect of control hole deviation, and the structure use of single-bend screw drill and PDC drill bit ,can get good effect under the conditions of a low pressure, high drilling rate ．compared with the ordinary drill ,the single bend screw drill can get 2-4 times higher the number of PDC bit cutting the sidewall． Therefore, the single bending screw has the strong deviation control capabilities． Key words: single bend screw； PDC bit ；deviation control；ADINA software． |
