本文選題：井下作業(yè) + 井下小修設(shè)備　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：石油是促進(jìn)國家發(fā)展的重要行業(yè),對推動經(jīng)濟進(jìn)步有著不可取代的地位。作為中國最大的油區(qū),大慶油田的產(chǎn)量和國家的經(jīng)濟發(fā)展有息息相關(guān)的聯(lián)系。然而,大慶油田也面臨嚴(yán)峻的資源問題,目前大慶剩余可采儲量約1.97億噸,按照現(xiàn)在開采速度計算,僅能滿足五年左右的開采時間。資源量枯竭然而需求量卻在持續(xù)增加,除了再尋找新的石油資源外,改善自身的開采工藝技術(shù),也成為當(dāng)前石油企業(yè)開展的重要工作。大慶主戰(zhàn)場松遼盆地及周邊一系列盆地中共含四套油氣層,而大慶油田目前只對其中第二層的半層進(jìn)行了充分開采,大慶的開采能力是目前最需要關(guān)注的細(xì)節(jié)。通過研究發(fā)現(xiàn),國內(nèi)諸多的老油田在進(jìn)行開采時,由于某些開發(fā)層非均質(zhì)的特性,在油田進(jìn)入作業(yè)后,含水量上升快,使油井部分層段遭到水淹,直接影響油田的開發(fā)效果,所以有必要對油田進(jìn)行封鎖。早期的封鎖技術(shù)采用注灰工藝,由于夾層的厚度以及壓力無法掌控,所以在面對夾層較薄或壓力較高的封堵層時,灰面不容易把握,成功率較低,成本較高。所以后期就使用橋塞封鎖技術(shù)。目前,大慶油田有諸多待打撈的橋塞,這些橋塞封鎖著一部分已射孔,可以開采的層段和一部分含水量較大的層段。但由于前期對這一步驟的不重視,導(dǎo)致大部分的橋塞信息不足,沒有辦法進(jìn)行打撈工具以及打撈方式的選擇。橋塞長期處在地下會受到介質(zhì)影響發(fā)生腐蝕,隨著時間的推移,橋塞的打撈工作愈發(fā)困難。根據(jù)現(xiàn)有的可鉆式橋塞式和可撈式橋塞技術(shù)對大慶油田進(jìn)行試驗研究,以此來解決現(xiàn)實中對井下作業(yè)小修設(shè)備鉆撈橋塞工藝技術(shù)的難題。而這一工作的順利進(jìn)行也將有助于國家的經(jīng)濟發(fā)展。本文以“老橋塞在資料的錄入與保存方面不完整,導(dǎo)致無法選擇打撈工具;橋塞在地層液體、油氣環(huán)境等作用的長時間影響下橋塞在接頭腐蝕情況嚴(yán)重,導(dǎo)致在打撈時無法通過配套專用的工具將其打撈;到目前為止可鉆式橋塞仍未配備有配套的打撈工具”這3個難題作為研究出發(fā)點,采取了相應(yīng)的研究實驗,提出了在打撈前,應(yīng)下工具處理井筒與橋塞,然后通過下鉛印確認(rèn)橋塞的類型,從而選取合適的打撈工具。此外,還具體分析了鉆撈橋塞的方法。
[Abstract]:Oil is an important industry to promote the development of the country, and has an irreplaceable position in promoting economic progress. As the largest oil region in China, Daqing oil production is closely related to the country's economic development. However, Daqing Oilfield is also faced with severe resource problems. At present, the remaining recoverable reserves in Daqing are about 197 million tons, which can only meet the production time of about five years according to the current production speed. Resource depletion but the demand is increasing. In addition to finding new oil resources, improving their own mining technology has become an important work of current oil enterprises. There are four sets of oil and gas layers in Songliao Basin and a series of surrounding basins in Daqing main battlefield, but only half of the second layer has been fully exploited in Daqing Oilfield at present, and the mining ability of Daqing is the most important detail to be paid attention to at present. Through the research, it is found that in many old oil fields in China, due to the heterogeneity of some development layers, the water content rises quickly after the oil field enters the operation, which causes water flooding in some parts of the oil well, which directly affects the development effect of the oil field. Therefore, it is necessary to seal off the oil fields. Because the thickness and pressure of interlayer can not be controlled, the ash surface is not easy to grasp, the success rate is low and the cost is high when facing the sealing layer with thin interlayer or high pressure. Therefore, the late use of bridge plug blockade technology. At present, there are many bridge plugs to be salvaged in Daqing Oilfield. However, due to the lack of attention to this step in the early stage, most of the bridge plug information is insufficient, and there is no way to choose the salvage tools and salvage methods. The bridge plug will be corroded by the medium for a long time, and the salvage of the bridge plug becomes more difficult with the passage of time. According to the existing drillable bridge plug and salvage bridge plug technology, the experimental study of Daqing Oilfield is carried out to solve the practical problem of drilling and salvage bridge plug technology for minor repair equipment in downhole operation. The smooth progress of this work will also contribute to the country's economic development. In this paper, due to the incomplete data input and preservation of the old bridge plug, it is impossible to choose the fishing tool, and the corrosion of the bridge plug in the joint is serious due to the effect of the bridge plug on the formation liquid and oil and gas environment for a long time. As a result, it can not be salvaged by matching special tools. Up to now, the drillable bridge plug has not been equipped with a matching fishing tool "as the starting point of the research, the corresponding research experiments are taken, and it is put forward that before the salvage, the drillable bridge plug is not equipped with a matching fishing tool. Tools should be used to handle wellbore and bridge plug, and then the type of bridge plug should be confirmed by using lead print to select the appropriate fishing tool. In addition, the method of dredging bridge plug is analyzed in detail.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE935
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本文編號：1788801