My Review: Useful Skill to have when fighting piercing resistent monsters.

個人評論：有用的技能有戰(zhàn)斗時耐刺穿怪物www.麻豆视频.com。

In the light of the successively occurred piercing and longitudinal cracking on the drill pipe box es,the fractures are analyzed by X-ray energy spectrum and electronic microscope,and the mechanical properties of the material are tested.

針對某油田一批進口鉆桿連續(xù)發(fā)生17根鉆桿內(nèi)螺紋接頭縱向開裂和刺穿事故黄色网站在线视频免费观看大全，對斷口進行X射線能譜久久免费黄片、電鏡和金相分析国产AV一级无码影院，并采樣進行機械性能試驗分析，認為材料不是導(dǎo)致接頭斷裂的主要原因三级天堂网观。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than that in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明WWW免费簧片AV网站COM，鉆桿屬于早期疲勞斷裂，斷裂主要原因是在空氣鉆井過程中鉆具受到的震動載荷遠大于鉆井液鉆井過程中的震動載荷亚洲精品A片，在交變的震動載荷作用下鲁一鲁中文字幕www，鉆具容易產(chǎn)生疲勞裂紋；由于現(xiàn)有的井口檢測儀表不能精確及時反映鉆桿刺穿之后產(chǎn)生的泵壓變化真实国产精品伦，無法及時采取預(yù)防措施影视先锋av在线资源，疲勞裂紋不斷擴展，最終導(dǎo)致了鉆桿斷裂失效6080午夜视频在线观看。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明插逼网站，鉆桿屬于早期疲勞斷裂，斷裂主要原因是在空氣鉆井過程中鉆具受到的震動載荷遠大于鉆井液鉆井過程中的震動載荷久久精品99视频在这里观看视频，在交變的震動載荷作用下自拍91，鉆具容易產(chǎn)生疲勞裂紋；由于現(xiàn)有的井口檢測儀表不能精確及時反映鉆桿刺穿之后產(chǎn)生的泵壓變化黄色视频网，無法及時采取預(yù)防措施日本中文字幕的视频网站，疲勞裂紋不斷擴展，最終導(dǎo)致了鉆桿斷裂失效。

Victim's anus or vagina on the tip of this pyramid-shaped hanger on, then slowly loosen the rope, and advanced slowly into the victim's body would be.

這句話是使用土地的立場尖銳的股份国产一级A片妓女视频AⅠ换脸，受害人就坐在最邊緣国产又大又粗又硬又湿，然后將逐漸樁和尖端的刺穿了受害者的身體的一部分。

I get a shot right through into a bolt of blue

猶如被一記藍色的閃電刺穿胸膛国产一级黄色视频无码。

The robber thrust his sword through the traveler's bosom.

那強盜以刀刺穿了那旅客的胸部。

The sword thrust him through .

劍刺穿了他久久无码日韩毛片乐播。

As it staggered back, the Giant threw its monstrous hand wildly at its wound and grabbed the protruding sword by its hilt, crushing Tyadara's hand as it attempted to remove the bloody weapon from its punctured stomach.

在它踉蹌后退時亚洲三级片在线网站，巨人趕忙用它那巨大的手捂住它的傷口，抓住了突出的長劍劍柄91人洗澡人人澡人人爽人人模，想在壓碎特雅德拉的手同時国产午夜精品美女视频露脸9，把那把滿是鮮血的武器從它被刺穿的胃上拔下來。

Through studying mechanism of drilling string failure in the action of interaction of cyclicstresses and corrosion, we find fracture source is accord with pitting corrosion inside surface ofdrilling string, crack from pitting corrosion lead to drilling string failure, the process of drillingstring failure is new drilling string → corrosion pit forming and crack initiation → corrosionfatigue crack propagation→piercement or fracture.

通過研究在鉆柱交變應(yīng)力和腐蝕的交互作用下的機理發(fā)現(xiàn)97无码免费人妻视频，腐蝕疲勞裂紋源與鉆桿內(nèi)壁蝕坑對應(yīng)欧美黄色露逼视频，蝕坑萌生裂紋造成鉆柱失效，鉆柱腐蝕疲勞破壞過程歸結(jié)為：新鉆桿—蝕坑形成及裂紋萌生—裂紋擴展—刺穿和斷裂国产操视频网。