钻井

According to the operating characteristic of the fluidics and the theory of hydromechanics, a dynamic model of the impactor is established, in order to bring the percussive rotary drilling technology into full play. Also a simulation program is developed to calculate the working properties of the impactor. By using the simulation program, the variation laws of the basic parameters of the hydraulic impactor under different structural parameters and hydraulics are obtained.

为充分发挥冲击旋转钻井技术的应用效果，在考虑射流元件工作特性的基础上，运用流体力学理论建立了液动冲击器工作动力学模型，并编制了计算液动冲击器性能参数的模拟程序，通过模拟计算程序得到了在不同液动冲击器结构参数和钻井水力参数下液动冲击器基本参数的变化规律。

For the sake of matching foam fluid frilling technology, international developed country has developed a series of foam fluid process technology, which run through each process of drilling, consummate well, increase output, exploitive and dynamic adjust.

为了与泡沫流体钻井技术相配套，国际上发达国家发展了一系列的泡沫流体作业技术，贯穿于钻井、完井、增产改造、开发及动态调整的各个过程。预计泡沫技术在我国会有相当大的应用前景。而在所有泡沫流体的作业中，一项共同的、重要的基础工作是研究、测定高温高压条件下的泡沫流体特性。

UBD is an irreversible process and its success depends on the changeable and unchangeable factors.

欠平衡钻井是不可逆的一次性过程，欠平衡钻井成败取决于多个可控因素与不可控因素。

It has the water quality characteristics of changeability and complexity of component, and it also has the characteristics of dispersing and movability of drilling operation.

钻井废水具有色度高、悬浮物浓度高、CODcr含量高、含有一定量的油的复杂性和多变性的水质特点，以及钻井作业的分散性和流动性的行业特点。

Enterprises leading products for SL3NB, QZ3NB, QF pump, QZ-9 series of drilling pump, the campaign mainly used for different depth of the oil field drilling, workover, cementing, water injection and other mining operations, industrial and mining enterprises can also be used for other transportation Mud, clay plastic, mortar, and other media.

企业主导产品为SL3NB、QZ3NB、QF泵、QZ-9等系列钻井泵，该系列主要用于油田不同井深的钻井、修井、固井、注水等工矿作业，也可用于其它工矿企业输送泥浆、粘土胶、灰浆等介质。

The purpose of the experiment is to use a simple model to simulate the force caused by ice upon the oil platform on the sea.

通过在实验室模拟实验，可以测量钻井平台在海冰作用下受到的力，产生的速度和位移，为钻井平台的设计、防护提供数据。

Proposed the gas well drilling rock debris pellet collision causes the overcut, thus causes the well deviation viewpoint; And has analyzed the rock partical collision to the well circumferential stress influence, whether to determine the gas drilling jitter overcut to provide the computation basis.

提出了气体钻井岩屑颗粒碰撞导致井径扩大，从而引起井斜的观点；并分析了岩石颗粒碰撞对井周应力的影响，为判定气体钻井是否失稳和井径扩大从而引起井斜提供计算依据。

A mathematic model is established for solving the problem of well layout. An evolution algorithm is designed for solving the partial ordering relation, by which an ideal method is obtained for calculation.

建立了钻井布局问题的数学模型，设计了基于偏序关系求解钻井布局问题的演化算法，得到了理想的计算结果。

Considering the properties of hydrate formation, the designing principle of drilling fluid was provided. Based on this, a new polyalcohol drilling fluid for oceanic hydrate formations was formulated. The performance of this drilling fluid was evaluated by shale hydration inhibiting test, low-temperature rheological property test, and gas hydrate formation inhibiting experiment.

针对海底天然气水合物地层及其钻井的特性，给出了钻进海底天然气水合物地层时钻井液体系的设计原则，根据此原则在充分考虑现有常用聚合醇钻井液体系特点的基础上，设计了一种适合海底天然气水合物地层钻井的新型聚合醇钻井液，并对其页岩水化抑制性、低温流变性和水合物生成抑制性进行了评价。

Power drill tool and PDC bit are used to ensure wellbore quality and penetration rate; polysulfonate potassium drilling fluid system is used to ensure downhole safety.

应用动力钻具配合高效PDC钻头钻井技术，保证了井身质量和钻井速度；应用聚磺钾盐钻井液体系及相关安全技术措施，保证了井下安全。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。