Design and Performance Evaluation of A Unique Deepwater Cement Slurry
一种独特深水固井水泥浆的设计及性能评价
The exploration and development of deepwater hydrocarbon resources necessitate the fast evolution of drilling and completion technologies for deepwater wells.
深水油气资源的勘探开发需要与之对应的深水钻完井技术的快速进步。
To drill and complete deepwater wells successfully, sophisticated technologies need to be developed to solve various problems arising from low temperature, weak formations, shallow water/gas flow, environmental protection, and high deepwater rig rate.
深水钻井要取得成功，就必须需要相配套的高新技术来应对深水钻完井当中遇到的低温、不稳定地层、浅层水/气，环境保护以及深水钻机高日费一系列问题。
It is a challenge to develop a good cement slurry that can be used successfully for deepwater wells under low-temperature environment.
研发一种能成功应对深水低温环境下的好的固井水泥浆是一种挑战。
Such cement slurry should have several distinct properties, such as a short thickening time, a fast transition from liquid to solid, a rapid development of compressive strength, and environmental friendliness.
这种水泥浆必须具有以下几种特性：稠化时间短、液固转化迅速、快速具有抗压强度并且对环境友好。
It usually takes a long time for conventional cement slurry to set and only limited compressive strength can be achieved at low temperatures.
在温度较低的条件下，常规水泥浆在很长时间段才能获得有限的抗压强度。
In addition, most additives used for the conventional cement have adverse effects on the environment.
除此之外，大多数常规水泥浆里的添加剂对环境也会造成不利的影响。
Therefore, it is of upmost importance to design an environmentally friendly and low-density cement slurry that is appropriate for deepwater wells.
因此，设计出一种适合深水井的环境友好和低密度的固井水泥浆是很重要的。
In this paper, a new deepwater cement [sulfur polymer cement (SP-C)] was designed and tested for the first time.
在这片文章中，一种新的深水水泥[硫-聚合物水泥(SP-C)]被设计出来并且被首次实验应用。
This new deepwater cement combines the advantages of the sulfoaluminate cement and Class G oilwell cement.
这种深水水泥综合硫铝酸盐水泥和G级油井水泥的优点。
Green cement additives including cement dispersant, fluid-loss-control agent, and accelerator were also developed.
绿色水泥添加剂：水泥分散剂，失水控制剂以及加速凝固剂都被研发出来。
Consequently, a unique low-density cement slurry was obtained for deepwater-well applications.
因此，一种特别的低密度水泥浆被研究出来并被应用于深海油井。
Laboratory tests showed that the low-density slurry exhibited favorable properties including the nonexistence of free fluid, an excellent fluid-loss-control capability,a short waiting-on-cement time at low temperatures, and a shortened transition time of critical gel strength.
实验室测试结果表明，这种低密度的水泥浆表现出几种突出的性能：不存在自由流变，良好的控失水能力，低温条件下短的候凝时间以及缩短形成凝胶强度的时间。
This new cement slurry can be easily prepared and applied in deepwater wells without adverse impacts on the marine environment.
这种型的水泥浆很容易配制，而且在应用到深海油井时也不影响海洋环境。
TSLT BY Petromandq , Summary From SPE 130266-PA Website
