The Research Of The Mud Pit Topsoil Stripping And Reclamation Technology By Jilin Honggang Oilfield Production Plant

Soil is the base of agricultural production as well as an essential part of natural geographical environment on the surface of the Earth. However, with the development of Chinese economic and the increase of the population, the per capita arable land is declining. What’s more? The land resources for developing are extremely limited. Therefore, not only cherish and use the land rationally but also protect the farmland effectively were made for Chinese basic national policy through the "land management law”.Topsoil is the precious natural resource of the rare, so in the production of various types of construction should attach great importance to the protection of cultivation layer. But in the actual development and construction, people often pay attention only to the load effect of the land, and the precious value of the tillage layer of topsoil are often ignored, the tillage layer of landfill and quality topsoil dumped at random, make better soil fertility, the content of organic matter rich topsoil is damaged, causing a great waste of surface soil resources, so the promotion of technology of land reclamation, intensive land use has become increasingly important, land reclamation has very important significance for the construction of new countryside in china.Drilling mud pit reclamation is in process of oilfield drilling, digging out a used to store containing wellbore returned debris and some obsolete mud mud pit, the occupation of the mud pit suitable farming land topsoil stripping, the stripping topsoil scientific collection and storage, harmless treatment for drilling completion for heavy metals and other pollutants on the mud pit, then stripped topsoil backfill, to restore the land farming ability.In this paper, Jilin oilfield oil production plant of red ridge mud pit reclamation project as the basis, the topsoil stripping technology and mud pit reclamation combining in-depth study, research the mud pit of temporary land stripping theory, application technology, surface quality after reclamation and crop yield changes, analyze the corresponding relationship between soil and peel thickness the quality of the soil, put forward different proposals to adopt different overburden thickness, temporary land to topsoil stripping discusses the extraction area and subsoil combine soil topsoil, combined with soil and subsoil backfill, backfill by mechanical and artificial way, carries on the research analysis and case of the mud pit reclamation the drilling mud pit, summed up with a single block area is small, before being stripped off plots, more concentrated, more than the total number of each region must be stripped mud pit reclamation characteristics of harmless treatment etc.. In 3, the mud pit reclamation case analysis, topsoil overburden after detection of organic matter content 20.6g/kg and quality of soil did not decrease, in the mud pit reclamation after first year corn yield reached 832 kg and reclamation in the second year to 840 kg and covers an area of and No. 3 in the mud pit before the yield was basically flat. The results show that the mud pit reclamation in protecting the precious soil resources at the same time also protects the ecological environment, the land requisition compensation balance, to ensure the sustainable use of land.