一种抗盐抗温降滤失剂的合成及性能研究

采用丙烯酰胺（AM）、2-丙烯酰胺基-2-甲基丙磺酸（AMPS）、丙烯酸（AA）等单体共聚合成了一种抗温抗盐降滤失剂,分析了影响合成产品的各种因素,优选了反应条件,评价了合成共聚物在淡水钻井液、盐水钻井液、饱和盐水钻井液中的降滤失效果,研究了合成共聚物的抗盐效果、抗温能力、抗钙能力和黏土膨胀抑制性。结果表明：合成共聚物具有良好的降滤失作用和抗温抗盐抗钙性能,增强了钻井液抑制泥页岩水化的能力。     

强抗钙强抑制改性淀粉的合成及性能评价

以淀粉和自制新型烯类单体为原料合成了改性淀粉接枝共聚物,并对该改性淀粉接枝共聚物性能进行了评价。结果表明,该改性淀粉在不同基浆中加量为2.0%~3.0%时,均可将滤失量控制在10 m L之内;抗温达130℃;尤其是具有强抗盐抗钙性能,抗氯化钠、氯化钙均可至饱和,并且随含盐量的增加,降滤失效果和提黏切能力反而增强。表观黏度上升率实验和黏土块浸泡实验结果表明,由于高含量阳离子基团的引入,该改性淀粉具有较好的抑制黏土水化分散性能。     

盐溶液对煤岩抑制性效果的评价

通过室内试验研究了不同种类（NaCl,KCl,CaCl 2,HCOONa和HCOOK）和不同质量浓度（5%,10%和20%）的盐溶液对晋城3号煤层煤岩样品膨胀性、滚动回收率、渗透率和钻杆腐蚀性等的影响规律。结果表明：在黏土矿物含量较高的煤层中钻进时,即使是使用清水作为钻井液,也会给煤储层带来伤害;盐溶液可以有效抑制煤基质吸附膨胀甚至使之收缩,在同类型盐溶液中,其抑制效果随其质量浓度的增加而增加;综合技术和经济成本的考虑,HCOONa和HCOOK对煤岩抑制性较好,腐蚀性低,最优加量均为10%。     

EFFECT OF THE DISTRIBUTION OF PYRIDINE 1-OXIDE ON ITS CATALYZED TWO-PHASE REACTION OF BENZOYL CHLORIDE AND CARBOXYLATE ION

Benzoyl chloride (PhCOCl) exhibits a peculiar inhibitve effect on its reaction with some sodium carboxylates (RCOONa) catalyzed by pyridine I-oxide (PNO) in a CH₂Cl₂/H₂O medium. However, the reaction follows well the rate law -d[PhCOCl]_org/dt = K_obs[PhCOCl]_org = (k_h + k_c [PNO]_i.aq )[PhCOCl]_org. Where k_h is the uncatalyzed rate coefficient, k_c is the catalyzed rate coefficient, and [PNO]_i,aq is the initial concentration of PNO in aqueous phase. When the concentration of RCOONa is the sufficiently high, k_obs, can be expressed as k_obs, = k_h + kPNO[P-NO]_i,aq/(l + k_PNO) Where is k_PNO the intrinsic rate coefficient of the reaction between PhCOCl and PNO in CH₂Cl₂ and k_PNO is the distribution constant of PNO between H₂O/CH₂Cl₂ phases and is defined as k_PNO = [PNO]_aq/[PNO]_org. In order to account for this peculiar phenomenon, the effects of organic compounds, including CCl₄, alcohol, ester, and carboxylic acid, were investigated. The presence of organic additive affects the distribution of PNO between H₂O and CH₂Cl₂ phases, the reaction rate, and the yield of product. In general, the value of k_PNO correlated well with the effective concentration of free PNO in the CH₂Cl₂ phase. For the PNO-catalyzed reaction of PhCOCl and CH₃COONa in H₂O/CH₂Cl₂ medium, the main conclusions are:

(1)The presence of ROH additive in CH₂Cl₂ increases the distribution of PNO is CH₂Cl₂ and the value of k_PNO due to the hydrogen bonding between ROH and PNO.

(2)The presence of nonpolar CC1₄ and RCOOR' in CH₂Cl₂ decreases distribution of PNO and the values of k_PNO.

(3)The presence of RCOOH in CH₂Cl₂ enchances the distribution of PNO in CH₂Cl₂ and the value of k_PNO. However, the main product is PhCOOCOR instead of PhCOOCOCH₃ in contrast to the cases of adding ROH, CCl₄, and RCOOR'.     

小阳离子-聚合醇钻井液技术研究及应用

在探讨聚合醇和小阳离子的作用机理的基础上,室内将小阳离子与聚合醇钻井液结合,优选出了抑制防塌能力更强的小阳离子-聚合醇钻井液配方.室内试验表明,该钻井液比聚磺钻井液在抑制性、润滑性、流变性以及抗温、抗盐能力方面都有不同程度的增强.在吐哈地区地质情况相对复杂的玉西、红台构造进行试验表明,该钻井液可大幅度降低井下复杂情况发生几率,较好地满足了钻进等各项施工以及油层保护的要求,收到了良好效果.     

两种异噻唑防腐剂抑菌效果的研究

研究了两种异噻唑衍生物防腐剂的防腐最佳pH值，以及防腐剂对微生物的最低抑制浓度（MIC），确定了在洗洁精中，单一防腐剂的最低用量，对两种防腐剂在洗洁精中的混合使用亦进行了研究。     

The Development and Application of a Novel Polyamine Water-based Drilling Fluid

Polyamine water-based drilling fluid has been used around the world in recent years. The authors investigated the key additive SDJA-1 as polyamine shale hydration inhibitor. Results indicate that SDJA-1 can suppress clay hydration effectively and provide a pH buffer effect. Polyacrylamide and nano-emulsion ZX-8 were selected as shale encapsulator and lubricant, respectively. The properties of polyamine water-based drilling fluid including inhibition, lubrication and toxicity were evaluated compared with other inhibitive water-based drilling fluids and conventional oil-based drilling fluid. Results show the fluid outperforms other water-based drilling fluids and approaches to the performance of oil-based drilling fluid. Furthermore, the system is non-toxic and environmental friendly, superior to oil-based drilling fluid. This system was successfully applied on well Tian 310 in Shengli oilfield. A caliper log was run which indicated the highest quality wellbore ever recorded in the entire block.     

油砂SAGD水平井钻井液体系

针对SAGD水平井在油砂开发过程中井壁失稳、托压易黏附卡钻及沥青沾染钻具和固控设备等难题,室内通过核心处理剂的优选,研发了一套强抑制高润滑水基钻井液体系。室内性能评价表明,该钻井液抗温180℃,抗沥青20%,抗钻屑25%,岩屑滚动回收率为91.7%,润滑性能与油基钻井液基本相当。强抑制高润滑水基钻井液在麦凯河区块5对（10口） SAGD水平井施工过程中性能稳定易调整,润滑效果突出,机械钻速高,无任何复杂事故。结果表明,强抑制高润滑水基钻井液完全满足浅层油砂SAGD水平井施工工艺的技术需求,具有推广应用价值。      

常用金属表面缓蚀自组装膜及其研究方法

简要介绍了常用活性金属表而主要涉及的缓蚀自组装膜体系以及缓蚀膜自组装行为的主要影响因素,并重点综述了电化学疗法、谱学技术、显微镜技术以及接触角测试等研究方法在活性金属表面缓蚀自组装膜研究领域的应用。     

滴北2井钻井液技术

滴北2井是为探明乌伦古坳陷滴北地区侏罗系、三叠系及石炭系含油气及地层情况而部署的一口预探井.针对该井地层特点及技术难点,优选了胺基封堵钻井液体系,该体系抑制性好、封堵性强、流变性好,具有一定的抗盐能力;辅助现场钻井液维护处理工艺,解决了该井上部地层虚厚泥饼导致起下钻阻卡、煤层坍塌及石炭系井漏的难题,满足了该井钻进的需求.该井的钻探成功为本区块其它井的施工提供了技术保障,加快了该区块的勘探开发进程.