Day 3 Fri, March 03, 2023最新文献

{"title":"Influence of Inorganic Solid Particles in the Formation and Stability of Crude Oil Emulsion","authors":"Tokima Hattori, Xingjuan Hao, Mai Shimokawara, Y. Kato, R. Kitamura, Y. Elakneswaran","doi":"10.2523/iptc-22863-ea","DOIUrl":"https://doi.org/10.2523/iptc-22863-ea","url":null,"abstract":"\u0000 Water-in-oil (W/O) emulsion could be formed during the transportation, refining, and storage of crude oils. In the stockpiling tanks, the emulsion and sludge formation were observed by storing of crude oils for a long period of time and cleaning of tanks. It has been reported that the presence of solids affects the emulsion types as well as the stability of emulsions produced. In addition, the surface properties of inorganic particles could influence the crude oil/water interface and thus affect the crude oil-water emulsion stability. Therefore, in this study, the presence of inorganic solid particles on the formation and stability of emulsion was quantitatively evaluated. A crude oil and synthetic brine were used for emulsion evaluation. In addition, calcite and kaolinite were selected as inorganic solid particles. Emulsions were prepared by mixing crude oil and synthetic brine at a ratio in volume of 1:9. The prepared emulsion was allowed to rest for 24 h and then centrifuged to separate crude oil and water. The volume and pH of resolved water were measured to assess emulsion stability in the presence of inorganic solids. It is found that the addition of inorganic solid particles increased the volume of resolved water and destabilize the emulsion compared to that of without inorganic solid particles. The concentration of solids influences the formation of stable emulsion: high concentration decreases the stable emulsion formation. The dissolution of inorganic solids increases the pH of the water and promotes the demulsification due to high surface potential of crude oil. Moreover, the solid particles enhance the formation of oil-in-water-in-oil (O/W/O) emulsion and thus generates unstable emulsion. Increase of temperature and addition of inorganic solids decrease the emulsion height, which was predicted by emulsion layer growth model where coagulation rate constant was a tuning parameter. High value of the coagulation rate constant implies strong coagulation between water droplets and facilitate emulsion instability.","PeriodicalId":185347,"journal":{"name":"Day 3 Fri, March 03, 2023","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126487150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Apply Cost Effective Multiple Cementing Technologies to Sidetrack in Air Drilling Environment in Chiya Khere Field","authors":"Hawraz Hasan, Krewa Ibrahim, Ali Majeed, A. Shafqat, Suwar Abdulfattah, Mohammed Ibrahim, Rebeen Qader","doi":"10.2523/iptc-23098-ea","DOIUrl":"https://doi.org/10.2523/iptc-23098-ea","url":null,"abstract":"\u0000 Chiya Khere field development plan is to drill a lateral hole from existing pilot holes. While in the drilling phase, severe losses were hindering the drilling plans due to lack of effective solutions to sidetrack in air drilling environment. Historically, losses circulation pills were never effective to cure the losses in highly fractured zones, the drilled wells in this field were abandoned using mechanical barriers (Bridge plugs) to facilitate the lateral plan, which was increasing the field development time and cost. Also, due to difficulties to obtain open-hole mechanical bridge plugs the well project duration was extended significantly, furthermore, isolating the loss zone using mechanical tools is the least preferred primarily due to availability and then setting failures in the big hole. In this paper, a newer approach will be presented to demonstrate the specialized technique to cure total losses which resulted in a significant reduction in the operational cost to drill these laterals in Chiya Khere field without changing the casing designs or postponing the project due to no viable solution and explains detailed techniques to overcome the challenges. Some techniques to combat severe losses are pumping loss circulation pills, drilling under balance, and pumping cement plugs. A new and unique loss control strategy was introduced in one of the recently drilled well in this field, in which two pills of solid free spacer separated by a fiber carrier fluid were pumped for instant bridging and viscosifying at the downhole were injected into the losses zone to create a temporary lock-up prior to pumping a rapid gelled cement plug for permanent isolation, once the losses been controlled a firm base cement plug was placed to spot a high compressive strength cement plug (kickoff cement plug), Applied proposed techniques led to having successful results in which rapid gelled cement headed by losses circulation material (LCM) solution combination cured the losses and successfully isolated the bottom of the hole which facilitated to placement a basement plug then kick off cement plug, and tag at the designed top of cement (TOC) to drill the lateral to the new planned trajectory.","PeriodicalId":185347,"journal":{"name":"Day 3 Fri, March 03, 2023","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125956686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}