本文選題：高溫緩凝劑 + 油井水泥外加劑�。� 參考：《天津大學》2013年碩士論文

【摘要】：隨著油氣易采、可采儲量逐漸減少，油氣田勘探開發(fā)已向深井、超深井和復雜井等方向發(fā)展，目的層地質(zhì)條件的復雜性給固井工程帶來了許多困難和挑戰(zhàn)。其中，高溫水泥漿技術在固井工程中起到非常重要的作用；隨著井底溫度和壓力的不斷提高，需在水泥漿體系中加入一定量的緩凝劑以調(diào)節(jié)水泥漿的稠化性能，確保固井施工安全。目前，，國內(nèi)的緩凝劑仍存在一定的缺陷，如適用溫度范圍窄、高溫緩凝性差、稀釋性強、易引起水泥漿異常凝膠等現(xiàn)象，給固井作業(yè)帶來不便。 本文針對油井水泥緩凝劑存在的上述問題，把聚合物高分子的分子作用機理與油井水泥水化過程緊密聯(lián)系起來，在已有聚合物類緩凝劑的基礎上，以AMPS(2-丙烯酰胺基-2-甲基丙磺酸)為主鏈、羧酸類官能團為主要緩凝基團，引入新型的聚合單體，采用自由基水溶液聚合方法，通過正交實驗及各聚合物綜合性能的對比研究，經(jīng)過大量的室內(nèi)合成實驗和性能評價，優(yōu)選出最佳的聚合物配方及合成工藝，研制了一種綜合性能良好的耐高溫緩凝劑，代號為GWH-300L。 本文對高溫緩凝劑GWH-300L進行了分子結構、耐溫性能表征及水泥漿綜合性能評價。IR譜圖結果表明，所有聚合單體均參與了共聚反應；DSC和TG測試結果表明，該聚合物具有良好的耐溫性能（266℃以前不會發(fā)生明顯的熱量和質(zhì)量的損失）。綜合性能評價結果表明，緩凝劑GWH-300L性能穩(wěn)定，適用溫度范圍廣，在70-200℃范圍內(nèi)可有效調(diào)節(jié)水泥漿的稠化時間；與其它油井水泥外加劑具有良好的配伍性和相容性，對不同油井水泥有較強的適應性；含緩凝劑GWH-300L的水泥漿體系具有良好的綜合性能，如強度發(fā)展較快，大溫差下頂部水泥漿不會出現(xiàn)超緩凝或長期不凝的現(xiàn)象，且可滿足溫差為60-130℃的固井需求；并且適用于高密度、常規(guī)密度和低密度水泥漿固井作業(yè)，能夠滿足高溫深井、超深井、大溫差及長封固段固井的施工要求，具有良好的應用前景。
[Abstract]:With the easy recovery of oil and gas, the recoverable reserves are gradually reduced, and the exploration and development of oil and gas fields have developed into deep wells, ultra deep wells and complex wells. The complexity of the geological conditions of the target layer has brought many difficulties and challenges to the cementing engineering. It is necessary to add a certain amount of Retarder in cement slurry to adjust the thickening property of cement slurry and ensure the safety of cementing construction. At present, there are still some defects in domestic retarder, such as the narrow application of temperature, poor retarding at high temperature, strong dilution, easy to lead to abnormal gelatin and so on. Then.
In this paper, the molecular mechanism of polymer polymer is closely linked with the hydration process of oil well cement. On the basis of the existing polymer retarder, AMPS (2- acrylamide -2- methyl propane sulfonic acid) is the main chain and carboxylic acid group is the main retarding group on the basis of the existing polymer retarder. Using the method of free radical water solution polymerization, through the orthogonal experiment and the comparative study of the comprehensive properties of each polymer, the best polymer formula and synthesis process are selected through a large number of indoor synthetic experiments and performance evaluation. A kind of high temperature retarder with good comprehensive performance is developed, which is named GWH-300L..
In this paper, the molecular structure of the high temperature retarder GWH-300L, the characterization of temperature resistance and the comprehensive performance evaluation of cement paste.IR spectra show that all polymerization monomers are involved in the copolymerization. The results of DSC and TG test show that the polymer has good temperature resistance (no obvious loss of heat and mass before 266 C). The performance evaluation results show that the retarder GWH-300L has a stable performance and a wide range of suitable temperature range. It can effectively regulate the thickening time of cement slurry in the range of 70-200 C; it has good compatibility and compatibility with other oil well cement admixtures, and has strong adaptability to different oil well cement. The cement slurry system containing retarder GWH-300L has a good adaptability. Good comprehensive performance, such as the rapid development of strength, the top cement slurry at the top of the large temperature difference will not be super slow or long-term non coagulating, and can meet the cementing demand of 60-130 C, and is suitable for high density, conventional density and low density cement slurry cementing operation, which can fill high temperature deep well, ultra deep well, large temperature difference and long sealing section. The construction requirements of the well have a good application prospect.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TQ172.75

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